David Jameson and Thomas Feilde, Average Temperatures at Yorktown, Williamsburg, and Kingston Parish, Virginia, 1772–1777

From Daily Record, 1 July 1776–18 December 1799 (Library of Congress).

In Jefferson’s hand, on 9 pp. in the section of miscellaneous notes bound with Jefferson’s daily observations.

In the far right-hand column of his transcribed temperature readings by David Jameson and Thomas Feilde, under the heading “Average of the precedg columns,” Jefferson noted the mean high and low temperatures of each date for the six-year period; writing vertically down the column alongside each month of the year, he wrote “The Average of the Month is,” followed by the mean low and high temperatures of that month for all six years.

In Query VII of his Notes on the State of Virginia, for a table showing rainfall amounts, temperatures, and wind direction for each month of the year, Jefferson included the monthly averages from the Jameson and Feilde readings in a column headed “Least & greatest daily heat by Farenheit’s thermometer.”

View the associated daily observations (Page 1)

Date Transcribed From Date To Date Daily Reading Number Location Transcribed Location Data Average Low Temp. (F) Transcribed Average Low Temp. (F) Data Average High Temp. (F) Transcribed Average High Temp. (F) Data

Jefferson Notes
Jan. 1. 1772-01-01 1777-01-01 3   Virginia 42 42 50 50

The Average of the Month is 38 1/2 to 44 (written vertically in average column between the lows and highs)
2. 1772-01-02 1777-01-02 3   Virginia 45 45 49 49  
3. 1772-01-03 1777-01-03 3   Virginia 43 1/2 43.5 49 49  
4. 1772-01-04 1777-01-04 3   Virginia 42 1/2 42.5 47 1/2 47.5  
5. 1772-01-05 1777-01-05 3   Virginia 44 44 49 49  
6. 1772-01-06 1777-01-06 3   Virginia 41 1/2 41.5 45 1/2 45.5  
7. 1772-01-07 1777-01-07 3   Virginia 40 40 46 46  
8. 1772-01-08 1777-01-08 3   Virginia 41 41 43 43  
9. 1772-01-09 1777-01-09 3   Virginia 37 1/2 37.5 45 45  
10. 1772-01-10 1777-01-10 3   Virginia 33 1/2 33.5 39 39  
11. 1772-01-11 1777-01-11 3   Virginia 34 34 39 39  
12. 1772-01-12 1777-01-12 3   Virginia 35 1/2 35.5 39 1/2 39.5  
13. 1772-01-13 1777-01-13 3   Virginia 34 34 38 1/2 38.5  
14. 1772-01-14 1777-01-14 3   Virginia 36 36 44 1/2 44.5  
15. 1772-01-15 1777-01-15 3   Virginia 38 38 45 45  
16. 1772-01-16 1777-01-16 3   Virginia 44 44 49 49  
17. 1772-01-17 1777-01-17 3   Virginia 39 1/2 39.5 44 44  
18. 1772-01-18 1777-01-18 3   Virginia 33 1/2 33.5 37 1/2 37.5  
19. 1772-01-19 1777-01-19 3   Virginia 31 1/2 31.5 37 37  
20. 1772-01-20 1777-01-20 3   Virginia 35 35 40 1/2 40.5  
21. 1772-01-21 1777-01-21 3   Virginia 36 1/2 36.5 44 44  
22. 1772-01-22 1777-01-22 3   Virginia 38 38 40 1/2 40.5  
23. 1772-01-23 1777-01-23 3   Virginia 37 37 41 41  
24. 1772-01-24 1777-01-24 3   Virginia 42 42 46 46  
25. 1772-01-25 1777-01-25 3   Virginia 41 41 43 43  
26. 1772-01-26 1777-01-26 3   Virginia 39 39 45 1/2 45.5  
27. 1772-01-27 1777-01-27 3   Virginia 39 39 43 43  
28. 1772-01-28 1777-01-28 3   Virginia 41 41 47 47  
29. 1772-01-29 1777-01-29 3   Virginia 35 35 41 1/2 41.5  
30. 1772-01-30 1777-01-30 3   Virginia 36 36 44 44  
31. 1772-01-31 1777-01-31 3   Virginia 41 1/2 41.5 45 45  
Feb. 1. 1772-02-01 1777-02-01 3   Virginia 42 1/2 42.5 48 48  
2. 1772-02-02 1777-02-02 3   Virginia 39 39 49 49  
3. 1772-02-03 1777-02-03 3   Virginia 39 39 44 44  
4. 1772-02-04 1777-02-04 3   Virginia 42 42 52 52  
5. 1772-02-05 1777-02-05 3   Virginia 42 42 45 1/2 45.5  
6. 1772-02-06 1777-02-06 3   Virginia 40 40 42 42  
7. 1772-02-07 1777-02-07 3   Virginia 39 39 47 47  
8. 1772-02-08 1777-02-08 3   Virginia 44 44 50 50  
9. 1772-02-09 1777-02-09 3   Virginia 44 44 52 52  
10. 1772-02-10 1777-02-10 3   Virginia 43 43 49 49

 

View the associated daily observations (Page 2)

Date Transcribed From Date To Date Daily Reading Number Location Transcribed Location Data Average Low Temp. (F) Transcribed Average Low Temp. (F) Data Average High Temp. (F) Transcribed Average High Temp. (F) Data

Jefferson Notes
11. 1772-02-11 1777-02-11 3   Virginia 41 41 44 44  
12. 1772-02-12 1777-02-12 3   Virginia 40 1/2 40.5 45 45  
13. 1772-02-13 1777-02-13 3   Virginia 36 36 47 1/2 47.5  
14. 1772-02-14 1777-02-14 3   Virginia 35 1/2 35.5 40 40  
15. 1772-02-15 1777-02-15 3   Virginia 38 38 45 1/2 45.5  
16. 1772-02-16 1777-02-16 3   Virginia 41 41 47 47  
17. 1772-02-17 1777-02-17 3   Virginia 44 44 51 1/2 51.5  
18. 1772-02-18 1777-02-18 3   Virginia 43 43 48 48  
19. 1772-02-19 1777-02-19 3   Virginia 42 42 46 1/2 46.5  
20. 1772-02-20 1777-02-20 3   Virginia 39 1/2 39.5 44 44  
21. 1772-02-21 1777-02-21 3   Virginia 36 36 48 48  
22. 1772-02-22 1777-02-22 3   Virginia 39 39 44 44  
23. 1772-02-23 1777-02-23 3   Virginia 40 1/2 40.5 48 48  
24. 1772-02-24 1777-02-24 3   Virginia 44 44 48 48  
25. 1772-02-25 1777-02-25 3   Virginia 43 43 43 43  
26. 1772-02-26 1777-02-26 3   Virginia 42 42 48 1/2 48.5  
27. 1772-02-27 1777-02-27 3   Virginia 47 47 55 1/2 55.5  
28. 1772-02-28 1777-02-28 3   Virginia 49 49 59 59

The Average of the month is 41 to 47.5 (written vertically in average column between the lows and highs)
29. 1772-02-29 1777-02-29 3   Virginia 31 31      
Mar. 1. 1772-03-01 1777-03-01 3   Virginia 46 46 53 1/2 53.5  
2. 1772-03-02 1777-03-02 3   Virginia 41 41 47 47  
3. 1772-03-03 1777-03-03 3   Virginia 39 39 51 1/2 51.5  
4. 1772-03-04 1777-03-04 3   Virginia 45 45 51 51  
5. 1772-03-05 1777-03-05 3   Virginia 44 1/2 44.5 51 1/2 51.5  
6. 1772-03-06 1777-03-06 3   Virginia 47 1/2 47.5 52 1/2 52.5  
7. 1772-03-07 1777-03-07 3   Virginia 48 48 51 51  
8. 1772-03-08 1777-03-08 3   Virginia 50 1/2 50.5 57 57  
9. 1772-03-09 1777-03-09 3   Virginia 52 52 58 58  
10. 1772-03-10 1777-03-10 3   Virginia 49 49 56 56  
11. 1772-03-11 1777-03-11 3   Virginia 48 48 54 1/2 54.5  
12. 1772-03-12 1777-03-12 3   Virginia 54 54 58 1/2 58.5  
13. 1772-03-13 1777-03-13 3   Virginia 49 1/2 49.5 53 1/2 53.5  
14. 1772-03-14 1777-03-14 3   Virginia 50 50 55 1/2 55.5  
15. 1772-03-15 1777-03-15 3   Virginia 52 52 57 1/2 57.5  
16. 1772-03-16 1777-03-16 3   Virginia 53 53 61 61  
17. 1772-03-17 1777-03-17 3   Virginia 52 1/2 52.5 54 1/2 54.5  
18. 1772-03-18 1777-03-18 3   Virginia 47 47 52 1/2 52.5  
19. 1772-03-19 1777-03-19 3   Virginia 48 48 53 53  
20. 1772-03-20 1777-03-20 3   Virginia 50 50 53 1/2 53.5  
21. 1772-03-21 1777-03-21 3   Virginia 50 50 57 57  
22. 1772-03-22 1777-03-22 3   Virginia 47 47 50 50  
23. 1772-03-23 1777-03-23 3   Virginia 47 47 53 1/2 53.5  
24. 1772-03-24 1777-03-24 3   Virginia 48 48 54 54  
25. 1772-03-25 1777-03-25 3   Virginia 44 44 53 53

 

View the associated daily observations (Page 3)

Date Transcribed From Date To Date Daily Reading Number Location Transcribed Location Data Average Low Temp. (F) Transcribed Average Low Temp. (F) Data Average High Temp. (F) Transcribed Average High Temp. (F) Data Jefferson
Notes
26. 1772-03-26 1777-03-26 3   Virginia 49 49 55 55  
27. 1772-03-27 1777-03-27 3   Virginia 43 43 55 55  
28. 1772-03-28 1777-03-28 3   Virginia 49 49 49 49  
29. 1772-03-29 1777-03-29 3   Virginia 47 47 53 53  
30. 1772-03-30 1777-03-30 3   Virginia 51 51 59 59  
31. 1772-03-31 1777-03-31 3   Virginia 56 1/2 56.5 69 1/2 69.5

The Average of the month is 48 to 54.5 (written vertically in average column between the lows and highs)
Apr. 1. 1772-04-01 1777-04-01 3   Virginia 52 1/2 52.5 57 57  
2. 1772-04-02 1777-04-02 3   Virginia 49 49 52 52  
3. 1772-04-03 1777-04-03 3   Virginia 51 1/2 51.5 59 59  
4. 1772-04-04 1777-04-04 3   Virginia 49 49 57 57  
5. 1772-04-05 1777-04-05 3   Virginia 48 1/2 48.5 59 59  
6. 1772-04-06 1777-04-06 3   Virginia 49 49 59 59  
7. 1772-04-07 1777-04-07 3   Virginia 52 1/2 52.5 63 63  
8. 1772-04-08 1777-04-08 3   Virginia 57 57 67 67  
9. 1772-04-09 1777-04-09 3   Virginia 58 1/2 58.5 69 69  
10. 1772-04-10 1777-04-10 3   Virginia 60 60 66 66  
11. 1772-04-11 1777-04-11 3   Virginia 57 57 64 64  
12. 1772-04-12 1777-04-12 3   Virginia 53 53 56 56  
13. 1772-04-13 1777-04-13 3   Virginia 52 52 60 60  
14. 1772-04-14 1777-04-14 3   Virginia 54 1/2 54.5 63 63  
15. 1772-04-15 1777-04-15 3   Virginia 55 1/2 55.5 62 62  
16. 1772-04-16 1777-04-16 3   Virginia 58 58 68 68  
17. 1772-04-17 1777-04-17 3   Virginia 61 61 71 71  
18. 1772-04-18 1777-04-18 3   Virginia 60 60 63 63  
19. 1772-04-19 1777-04-19 3   Virginia 56 1/2 56.5 61 61  
20. 1772-04-20 1777-04-20 3   Virginia 57 57 63 63  
21. 1772-04-21 1777-04-21 3   Virginia 58 58 63 63  
22. 1772-04-22 1777-04-22 3   Virginia 57 57 63 63  
23. 1772-04-23 1777-04-23 3   Virginia 62 62 65 65  
24. 1772-04-24 1777-04-24 3   Virginia 60 60 65 65  
25. 1772-04-25 1777-04-25 3   Virginia 61 61 67 67  
26. 1772-04-26 1777-04-26 3   Virginia 63 63 71 1/2 71.5  
27. 1772-04-27 1777-04-27 3   Virginia 60 1/2 60.5 66 66  
28. 1772-04-28 1777-04-28 3   Virginia 59 59 62 62  
29. 1772-04-29 1777-04-29 3   Virginia 56 1/2 56.5 61 61  
30. 1772-04-30 1777-04-30 3   Virginia 55 1/2 55.5 59 59

The Average of the month is 56 to 62.5 

 

View the associated daily observations (Page 4)

Date Transcribed From Date To Date Daily Reading Number Location Transcribed Location Data Average Low Temp. (F) Transcribed Average Low Temp. (F) Data Average High Temp. (F) Transcribed Average High Temp. (F) Data Jefferson Notes
May 1. 1772-05-01 1777-05-01 3   Virginia 53 53 60 60  
2. 1772-05-02 1777-05-02 3   Virginia 54 54 60 1/2 60.5  
3. 1772-05-03 1777-05-03 3   Virginia 55 55 63 63  
4. 1772-05-04 1777-05-04 3   Virginia 54 54 65 65  
5. 1772-05-05 1777-05-05 3   Virginia 57 57 62 1/2 62.5  
6. 1772-05-06 1777-05-06 3   Virginia 60 60 72 72  
7. 1772-05-07 1777-05-07 3   Virginia 61 61 68 1/2 68.5  
8. 1772-05-08 1777-05-08 3   Virginia 60 60 66 66  
9. 1772-05-09 1777-05-09 3   Virginia 64 1/2 64.5 70 70  
10. 1772-05-10 1777-05-10 3   Virginia 63 1/2 63.5 71 71  
11. 1772-05-11 1777-05-11 3   Virginia 65 65 70 70  
12. 1772-05-12 1777-05-12 3   Virginia 66 66 74 74  
13. 1772-05-13 1777-05-13 3   Virginia 64 64 68 68  
14. 1772-05-14 1777-05-14 3   Virginia 63 63 70 70  
15. 1772-05-15 1777-05-15 3   Virginia 64 64 70 70  
16. 1772-05-16 1777-05-16 3   Virginia 66 66 75 75  
17. 1772-05-17 1777-05-17 3   Virginia 66 66 74 74  
18. 1772-05-18 1777-05-18 3   Virginia 66 1/2 66.5 73 73  
19. 1772-05-19 1777-05-19 3   Virginia 64 1/2 64.5 73 73  
20. 1772-05-20 1777-05-20 3   Virginia 65 1/2 65.5 74 1/2 74.5  
21. 1772-05-21 1777-05-21 3   Virginia 69 69 75 75  
22. 1772-05-22 1777-05-22 3   Virginia 66 66 71 1/2 71.5  
23. 1772-05-23 1777-05-23 3   Virginia 66 66 74 74  
24. 1772-05-24 1777-05-24 3   Virginia 65 65 70 70  
25. 1772-05-25 1777-05-25 3   Virginia 66 1/2 66.5 73 73  
26. 1772-05-26 1777-05-26 3   Virginia 70 70 75 75  
27. 1772-05-27 1777-05-27 3   Virginia 66 1/2 66.5 74 74  
28. 1772-05-28 1777-05-28 3   Virginia 63 63 71 71  
29. 1772-05-29 1777-05-29 3   Virginia 62 62 70 70  
30. 1772-05-30 1777-05-30 3   Virginia 64 64 73 73  
31. 1772-05-31 1777-05-31 3   Virginia 68 68 80 80

The Average of the Month is 63 to 70.5 (written vertically in average column between the lows and highs)
June. 1. 1772-06-01 1777-06-01 3   Virginia 71 71 79 1/2 79.5  
2. 1772-06-02 1777-06-02 3   Virginia 73 73 79 79  
3. 1772-06-03 1777-06-03 3   Virginia 70 70 75 75  
4. 1772-06-04 1777-06-04 3   Virginia 68 68 72 72  
5. 1772-06-05 1777-06-05 3   Virginia 67 67 73 73  
6. 1772-06-06 1777-06-06 3   Virginia 69 69 75 75  
7. 1772-06-07 1777-06-07 3   Virginia 70 1/2 70.5 74 1/2 74.5  
8. 1772-06-08 1777-06-08 3   Virginia 71 71 76 76  
9. 1772-06-09 1777-06-09 3   Virginia 70 70 76 76  
10. 1772-06-10 1777-06-10 3   Virginia 68 68 68 1/2 68.5  
11. 1772-06-11 1777-06-11 3   Virginia 64 64 69 69  
12. 1772-06-12 1777-06-12 3   Virginia 64 64 75 75

 

View the associated daily observations (Page 5)

Date Transcribed From Date To Date Daily Reading Number Location Transcribed Location Data Average Low Temp. (F) Transcribed Average Low Temp. (F) Data Average High Temp. (F) Transcribed Average High Temp. (F) Data Jefferson Notes
13. 1772-06-13 1777-06-13 3   Virginia 67 67 79 79  
14. 1772-06-14 1777-06-14 3   Virginia 68 68 76 76  
15. 1772-06-15 1777-06-15 3   Virginia 70 1/2 70.5 82 82  
16. 1772-06-16 1777-06-16 3   Virginia 73 1/2 73.5 82 82  
17. 1772-06-17 1777-06-17 3   Virginia 74 74 82 82  
18. 1772-06-18 1777-06-18 3   Virginia 70 70 79 79  
19. 1772-06-19 1777-06-19 3   Virginia 71 71 79 1/2 79.5  
20. 1772-06-20 1777-06-20 3   Virginia 73 73 80 80  
21. 1772-06-21 1777-06-21 3   Virginia 73 73 80 80  
22. 1772-06-22 1777-06-22 3   Virginia 72 72 79 79  
23. 1772-06-23 1777-06-23 3   Virginia 74 74 81 1/2 81.5  
24. 1772-06-24 1777-06-24 3   Virginia 76 1/2 76.5 82 1/2 82.5  
25. 1772-06-25 1777-06-25 3   Virginia 75 75 80 1/2 80.5  
26. 1772-06-26 1777-06-26 3   Virginia 75 75 83 83  
27. 1772-06-27 1777-06-27 3   Virginia 75 75 83 83  
28. 1772-06-28 1777-06-28 3   Virginia 76 76 83 83  
29. 1772-06-29 1777-06-29 3   Virginia 77 77 82 82  
30. 1772-06-30 1777-06-30 3   Virginia 77 77 82 82

The Average of the Month is 71 1/2 to 78 1/4 (written vertically in average column between the lows and highs)
July. 1. 1772-07-01 1777-07-01 3   Virginia 76 1/2 76.5 82 1/2 82.5  
2. 1772-07-02 1777-07-02 3   Virginia 76 1/2 76.5 81 81  
3. 1772-07-03 1777-07-03 3   Virginia 74 1/2 74.5 81 1/2 81.5  
4. 1772-07-04 1777-07-04 3   Virginia 76 76 81 81  
5. 1772-07-05 1777-07-05 3   Virginia 77 77 85 1/2 85.5  
6. 1772-07-06 1777-07-06 3   Virginia 77 77 83 83  
7. 1772-07-07 1777-07-07 3   Virginia 77 77 83 83  
8. 1772-07-08 1777-07-08 3   Virginia 78 1/2 78.5 82 1/2 82.5  
9. 1772-07-09 1777-07-09 3   Virginia 78 78 84 84  
10. 1772-07-10 1777-07-10 3   Virginia 77 77 83 1/2 83.5  
11. 1772-07-11 1777-07-11 3   Virginia 77 77 80 80  
12. 1772-07-12 1777-07-12 3   Virginia 76 76 81 1/2 81.5  
13. 1772-07-13 1777-07-13 3   Virginia 76 76 82 82  
14. 1772-07-14 1777-07-14 3   Virginia 76 1/2 76.5 80 1/2 80.5  
15. 1772-07-15 1777-07-15 3   Virginia 76 76 85 85  
16. 1772-07-16 1777-07-16 3   Virginia 78 78 84 1/2 84.5  
17. 1772-07-17 1777-07-17 3   Virginia 77 1/2 77.5 84 84  
18. 1772-07-18 1777-07-18 3   Virginia 76 76 84 1/2 84.5  
19. 1772-07-19 1777-07-19 3   Virginia 78 78 81 81  
20. 1772-07-20 1777-07-20 3   Virginia 76 1/2 76.5 82 1/2 82.5  
21. 1772-07-21 1777-07-21 3   Virginia 77 77 84 1/2 84.5  
22. 1772-07-22 1777-07-22 3   Virginia 77 1/2 77.5 83 83

 

View the associated daily observations (Page 6)

Date Transcribed From Date To Date Daily Reading Number Location Transcribed Location Data Average Low Temp. (F) Transcribed Average Low Temp. (F) Data Average High Temp. (F) Transcribed Average High Temp. (F) Data Jefferson Notes
23. 1772-07-23 1777-07-23 3   Virginia 75 75 78 1/2 78.5  
24. 1772-07-24 1777-07-24 3   Virginia 75 75 79 79  
25. 1772-07-25 1777-07-25 3   Virginia 75 75 78 1/2 78.5  
26. 1772-07-26 1777-07-26 3   Virginia 76 76 80 80  
27. 1772-07-27 1777-07-27 3   Virginia 76 76 82 1/2 82.5  
28. 1772-07-28 1777-07-28 3   Virginia 78 78 84 1/2 84.5  
29. 1772-07-29 1777-07-29 3   Virginia 79 79 86 86  
30. 1772-07-30 1777-07-30 3   Virginia 78 1/2 78.5 84 1/2 84.5  
31. 1772-07-31 1777-07-31 3   Virginia 78 1/2 78.5 83 83

The Average of the Month is 79 to 82 1/2 (written vertically in average column between the lows and highs)
Aug. 1. 1772-08-01 1777-08-01 3   Virginia 78 1/2 78.5 84 84  
2. 1772-08-02 1777-08-02 3   Virginia 77 77 84 84  
3. 1772-08-03 1777-08-03 3   Virginia 74 74 78 78  
4. 1772-08-04 1777-08-04 3   Virginia 77 77 78 78  
5. 1772-08-05 1777-08-05 3   Virginia 75 75 82 82  
6. 1772-08-06 1777-08-06 3   Virginia 76 76 80 80  
7. 1772-08-07 1777-08-07 3   Virginia 76 1/2 76.5 82 82  
8. 1772-08-08 1777-08-08 3   Virginia 76 76 82 82  
9. 1772-08-09 1777-08-09 3   Virginia 77 1/2 77.5 82 82  
10. 1772-08-10 1777-08-10 3   Virginia 77 77 83 83  
11. 1772-08-11 1777-08-11 3   Virginia 78 78 82 82  
12. 1772-08-12 1777-08-12 3   Virginia 77 77 80 80  
13. 1772-08-13 1777-08-13 3   Virginia 77 77 79 79  
14. 1772-08-14 1777-08-14 3   Virginia 77 1/2 77.5 82 82  
15. 1772-08-15 1777-08-15 3   Virginia 81 81 86 86  
16. 1772-08-16 1777-08-16 3   Virginia 80 80 85 85  
17. 1772-08-17 1777-08-17 3   Virginia 79 79 85 85  
18. 1772-08-18 1777-08-18 3   Virginia 79 79 82 1/2 82.5  
19. 1772-08-19 1777-08-19 3   Virginia 77 1/2 77.5 79 1/2 79.5  
20. 1772-08-20 1777-08-20 3   Virginia 76 1/2 76.5 81 1/2 81.5  
21. 1772-08-21 1777-08-21 3   Virginia 76 1/2 76.5 82 82  
22. 1772-08-22 1777-08-22 3   Virginia 78 78 83 1/2 83.5  
23. 1772-08-23 1777-08-23 3   Virginia 76 1/2 76.5 82 1/2 82.5  
24. 1772-08-24 1777-08-24 3   Virginia 75 1/2 75.5 77 77  
25. 1772-08-25 1777-08-25 3   Virginia 75 75 80 80  
26. 1772-08-26 1777-08-26 3   Virginia 74 1/2 74.5 78 1/2 78.5  
27. 1772-08-27 1777-08-27 3   Virginia 72 72 78 78  
28. 1772-08-28 1777-08-28 3   Virginia 72 72 79 79  
29. 1772-08-29 1777-08-29 3   Virginia 71 1/2 71.5 77 77  
30. 1772-08-30 1777-08-30 3   Virginia 73 73 77 77  
31. 1772-08-31 1777-08-31 3   Virginia 72 1/2 72.5 79 79

The Average of the Month is 76.25 to 81 (written vertically in average column between the lows and highs)

 

View the associated daily observations (Page 7)

Date Transcribed From Date To Date Daily Reading Number Location Transcribed Location Data Average Low Temp. (F) Transcribed Average Low Temp. (F) Data Average High Temp. (F) Transcribed Average High Temp. (F) Data Jefferson Notes
Sep. 1. 1772-09-01 1777-09-01 3   Virginia 74 74 78 1/2 78.5  
2. 1772-09-02 1777-09-02 3   Virginia 74 74 79 79  
3. 1772-09-03 1777-09-03 3   Virginia 74 74 80 1/2 80.5  
4. 1772-09-04 1777-09-04 3   Virginia 74 74 77 1/2 77.5  
5. 1772-09-05 1777-09-05 3   Virginia 73 73 74 74  
6. 1772-09-06 1777-09-06 3   Virginia 71 71 75 75  
7. 1772-09-07 1777-09-07 3   Virginia 71 1/2 71.5 76 1/2 76.5  
8. 1772-09-08 1777-09-08 3   Virginia 70 1/2 70.5 75 75  
9. 1772-09-09 1777-09-09 3   Virginia 72 72 76 1/2 76.5  
10. 1772-09-10 1777-09-10 3   Virginia 71 71 77 1/2 77.5  
11. 1772-09-11 1777-09-11 3   Virginia 73 1/2 73.5 77 1/2 77.5  
12. 1772-09-12 1777-09-12 3   Virginia 71 1/2 71.5 73 1/2 73.5  
13. 1772-09-13 1777-09-13 3   Virginia 69 1/2 69.5 74 1/2 74.5  
14. 1772-09-14 1777-09-14 3   Virginia 70 1/2 70.5 76 76  
15. 1772-09-15 1777-09-15 3   Virginia 72 1/2 72.5 77 77  
16. 1772-09-16 1777-09-16 3   Virginia 71 1/2 71.5 72 1/2 72.5  
17. 1772-09-17 1777-09-17 3   Virginia 71 71 76 1/2 76.5  
18. 1772-09-18 1777-09-18 3   Virginia 71 1/2 71.5 74 74  
19. 1772-09-19 1777-09-19 3   Virginia 71 71 73 73  
20. 1772-09-20 1777-09-20 3   Virginia 69 69 74 74  
21. 1772-09-21 1777-09-21 3   Virginia 68 68 74 74  
22. 1772-09-22 1777-09-22 3   Virginia 68 1/2 68.5 74 1/2 74.5  
23. 1772-09-23 1777-09-23 3   Virginia 65 1/2 65.5 72 72  
24. 1772-09-24 1777-09-24 3   Virginia 63 63 64 64  
25. 1772-09-25 1777-09-25 3   Virginia 63 63 67 1/2 67.5  
26. 1772-09-26 1777-09-26 3   Virginia 62 1/2 62.5 69 1/2 69.5  
27. 1772-09-27 1777-09-27 3   Virginia 66 1/2 66.5 77 77  
28. 1772-09-28 1777-09-28 3   Virginia 65 65 70 70  
29. 1772-09-29 1777-09-29 3   Virginia 63 1/2 63.5 70 70  
30. 1772-09-30 1777-09-30 3   Virginia 65 65 71 71

[The Average of the Month is] 69.5 to 74 1/4 (written vertically in average column between the lows and highs)
Oct. 1. 1772-10-01 1777-10-01 3   Virginia 64 64 69 69  
2. 1772-10-02 1777-10-02 3   Virginia 65 65 70 70  
3. 1772-10-03 1777-10-03 3   Virginia 62 1/2 62.5 66 1/2 66.5  
4. 1772-10-04 1777-10-04 3   Virginia 63 1/2 63.5 68 1/2 68.5  
5. 1772-10-05 1777-10-05 3   Virginia 65 65 68 68  
6. 1772-10-06 1777-10-06 3   Virginia 66 66 71 71  
7. 1772-10-07 1777-10-07 3   Virginia 65 1/2 65.5 69 69  
8. 1772-10-08 1777-10-08 3   Virginia 65 65 70 70  
9. 1772-10-09 1777-10-09 3   Virginia 66 1/2 66.5 73 73  
10. 1772-10-10 1777-10-10 3   Virginia 63 63 66 1/2 66.5  

 

View the associated daily observations (Page 8)

Date Transcribed From Date To Date Daily Reading Number Location Transcribed Location Data Average Low Temp. (F) Transcribed Average Low Temp. (F) Data Average High Temp. (F) Transcribed Average High Temp. (F) Data

Jefferson Notes
11. 1772-10-11 1777-10-11 3   Virginia 59 1/2 59.5 61 1/2 61.5  
12. 1772-10-12 1777-10-12 3   Virginia 61 61 66 1/2 66.5  
13. 1772-10-13 1777-10-13 3   Virginia 60 1/2 60.5 67 67  
14. 1772-10-14 1777-10-14 3   Virginia 62 62 66 66  
15. 1772-10-15 1777-10-15 3   Virginia 62 62 66 66  
16. 1772-10-16 1777-10-16 3   Virginia 63 63 67 67  
17. 1772-10-17 1777-10-17 3   Virginia 61 61 64 64  
18. 1772-10-18 1777-10-18 3   Virginia 61 61 67 67  
19. 1772-10-19 1777-10-19 3   Virginia 62 62 67 67  
20. 1772-10-20 1777-10-20 3   Virginia 61 61 66 1/2 66.5  
21. 1772-10-21 1777-10-21 3   Virginia 56 1/2 56.5 63 1/2 63.5  
22. 1772-10-22 1777-10-22 3   Virginia 57 1/2 57.5 62 1/2 62.5  
23. 1772-10-23 1777-10-23 3   Virginia 59 1/2 59.5 65 65  
24. 1772-10-24 1777-10-24 3   Virginia 61 1/2 61.5 70 70  
25. 1772-10-25 1777-10-25 3   Virginia 60 1/2 60.5 64 64  
26. 1772-10-26 1777-10-26 3   Virginia 60 1/2 60.5 68 68  
27. 1772-10-27 1777-10-27 3   Virginia 61 1/2 61.5 72 72  
28. 1772-10-28 1777-10-28 3   Virginia 58 1/2 58.5 62 62  
29. 1772-10-29 1777-10-29 3   Virginia 55 55 59 59  
30. 1772-10-30 1777-10-30 3   Virginia 53 1/2 53.5 60 60  
31. 1772-10-31 1777-10-31 3   Virginia 55 55 64 64

Average of the month 61.25 to 66.5 (written vertically in average column between the lows and highs)
Nov. 1. 1772-11-01 1777-11-01 3   Virginia 55 1/2 55.5 62 62  
2. 1772-11-02 1777-11-02 3   Virginia 55 55 60 1/2 60.5  
3. 1772-11-03 1777-11-03 3   Virginia 52 52 57 57  
4. 1772-11-04 1777-11-04 3   Virginia 51 51 61 61  
5. 1772-11-05 1777-11-05 3   Virginia 54 1/2 54.5 62 62  
6. 1772-11-06 1777-11-06 3   Virginia 52 52 56 1/2 56.5  
7. 1772-11-07 1777-11-07 3   Virginia 49 1/2 49.5 55 55  
8. 1772-11-08 1777-11-08 3   Virginia 48 1/2 48.5 55 1/2 55.5  
9. 1772-11-09 1777-11-09 3   Virginia 51 1/2 51.5 57 1/2 57.5  
10. 1772-11-10 1777-11-10 3   Virginia 50 1/2 50.5 55 55  
11. 1772-11-11 1777-11-11 3   Virginia 49 1/2 49.5 54 54  
12. 1772-11-12 1777-11-12 3   Virginia 48 48 54 54  
13. 1772-11-13 1777-11-13 3   Virginia 48 1/2 48.5 54 1/2 54.5  
14. 1772-11-14 1777-11-14 3   Virginia 45 1/2 45.5 52 52  
15. 1772-11-15 1777-11-15 3   Virginia 48 48 50 1/2 50.5  
16. 1772-11-16 1777-11-16 3   Virginia 45 1/2 45.5 51 1/2 51.5  
17. 1772-11-17 1777-11-17 3   Virginia 45 1/2 45.5 50 50  
18. 1772-11-18 1777-11-18 3   Virginia 39 39 43 43  
19. 1772-11-19 1777-11-19 3   Virginia 38 38 44 44  
20. 1772-11-20 1777-11-20 3   Virginia 41 41 46 1/2 46.5

 

Page 9

Date Transcribed From Date To Date Daily Reading Number Location Transcribed Location Data Average Low Temp. (F) Transcribed Average Low Temp. (F) Data Average High Temp. (F) Transcribed Average High Temp. (F) Data

Jefferson Notes
21. 1772-11-21 1777-11-21 3   Virginia 43 1/2 43.5 53 1/2 53.5  
22. 1772-11-22 1777-11-22 3   Virginia 46 46 51 1/2 51.5  
23. 1772-11-23 1777-11-23 3   Virginia 48 48 51 51  
24. 1772-11-24 1777-11-24 3   Virginia 48 48 57 1/2 57.5  
25. 1772-11-25 1777-11-25 3   Virginia 52 52 59 59  
26. 1772-11-26 1777-11-26 3   Virginia 48 48 54 54  
27. 1772-11-27 1777-11-27 3   Virginia 43 1/2 43.5 47 47  
28. 1772-11-28 1777-11-28 3   Virginia 43 43 52 52  
29. 1772-11-29 1777-11-29 3   Virginia 47 47 52 52  
30. 1772-11-30 1777-11-30 3   Virginia 44 44 50 50

Average [of the month] 47.75 to 53.5 (written vertically in average column between the lows and highs)
Dec. 1. 1772-12-01 1777-12-01 3   Virginia 40 1/2 40.5 50 50  
2. 1772-12-02 1777-12-02 3   Virginia 44 44 50 50  
3. 1772-12-03 1777-12-03 3   Virginia 48 48 55 55  
4. 1772-12-04 1777-12-04 3   Virginia 47 47 50 50  
5. 1772-12-05 1777-12-05 3   Virginia 44 1/2 44.5 50 50  
6. 1772-12-06 1777-12-06 3   Virginia 43 1/2 43.5 53 53  
7. 1772-12-07 1777-12-07 3   Virginia 48 1/2 48.5 54 1/2 54.5  
8. 1772-12-08 1777-12-08 3   Virginia 48 1/2 48.5 53 1/2 53.5  
9. 1772-12-09 1777-12-09 3   Virginia 45 45 50 1/2 50.5  
10. 1772-12-10 1777-12-10 3   Virginia 44 1/2 44.5 48 1/2 48.5  
11. 1772-12-11 1777-12-11 3   Virginia 43 43 50 50  
12. 1772-12-12 1777-12-12 3   Virginia 40 40 43 43  
13. 1772-12-13 1777-12-13 3   Virginia 39 1/2 39.5 45 45  
14. 1772-12-14 1777-12-14 3   Virginia 42 1/2 42.5 50 50  
15. 1772-12-15 1777-12-15 3   Virginia 46 46 53 1/2 53.5  
16. 1772-12-16 1777-12-16 3   Virginia 48 48 51 1/2 51.5  
17. 1772-12-17 1777-12-17 3   Virginia 47 1/2 47.5 54 54  
18. 1772-12-18 1777-12-18 3   Virginia 47 47 50 1/2 50.5  
19. 1772-12-19 1777-12-19 3   Virginia 44 44 49 1/2 49.5  
20. 1772-12-20 1777-12-20 3   Virginia 41 41 43 43  
21. 1772-12-21 1777-12-21 3   Virginia 39 1/2 39.5 41 1/2 41.5  
22. 1772-12-22 1777-12-22 3   Virginia 38 1/2 38.5 44 44  
23. 1772-12-23 1777-12-23 3   Virginia 42 42 42 1/2 42.5  
24. 1772-12-24 1777-12-24 3   Virginia 39 1/2 39.5 45 1/2 45.5  
25. 1772-12-25 1777-12-25 3   Virginia 43 1/2 43.5 48 48  
26. 1772-12-26 1777-12-26 3   Virginia 43 43 44 1/2 44.5  
27. 1772-12-27 1777-12-27 3   Virginia 38 38 47 47  
28. 1772-12-28 1777-12-28 3   Virginia 37 37 41 41  
29. 1772-12-29 1777-12-29 3   Virginia 37 37 40 40  
30. 1772-12-30 1777-12-30 3   Virginia 40 1/2 40.5 46 46  
31. 1772-12-31 1777-12-31 3   Virginia 41 41 46 1/2 46.5

Average [of the month] 43 to 48.75 (written vertically in average column between the lows and highs)