May 1833 and Spring 1837

[Weather-history]

May 1833 has been a month that has fascinated me because of its remarkable CET value with a CET of 15.1, way ahead of any other May in the last 360 years. We experienced the equivalent of this with December 2015.

The readings from were recorded by Orlando Whistlecraft (1810-93) who was a meteorologist and and an almanac compiler. The readings were recorded from Thwaite in Suffolk.

I converted the readings into Celsius from Fahrenheit 

May 1833 (first number is the minimum, the second number is the maximum) 

1. 5.0, 13.9
2. 9.4, 15.0
3. 10.6, 20.6
4. 12.8, 26.7
5. 12.2, 21.7
6. 6.7, 20.6
7. 7.2, 20.6
8. 8.9, 23.4
9. 8.9, 24.4
10. 9.4, 18.9
11. 10.6, 19.4
12. 8.9, 23.9
13. 12.2, 23.9
14. 10.0, 25.0
15. 12.8, 27.8
16. 15.0, 28.9
17. 14.4, 29.7
18. 14.4, 22.2
19. 8.9, 15.6
20. 10.6, 20.6
21. 11.1, 23.9
22. 8.3, 23.9
23. 9.4, 23.9
24. 8.9, 24.4
25. 8.9, 26.7
26. 10.0, 14.4
27. 8.3, 19.4
28. 8.3, 22.8
29. 8.9, 18.9
30. 3.9, 18.9
31. 3.9, 22.2

22 days above 20C

----------

Coldest Spring on record is 1837 with a CET of 5.6

March: 2.3

April: 4.7

May: 9.9

Here are the readings that were recorded from Thwaite for this remarkable season.

First number is the minimum, second number is the maximum

March

1. -2.2, 4.4
2. -0.6, 4.4
3. -0.6, 6.1
4. 2.8, 5.6
5. 0.0, 8.3
6. 1.7, 5.0
7. 0.0, 8.3
8. 0.0, 8.9
9. 3.9, 10.6
10. 2.8, 9.4
11. 0.0, 8.3
12. 0.6, 7.8
13. 0.0, 5.0
14. 0.0, 6.7
15. 1.7, 3.9
16. 2.2, 4.4
17. 1.7, 6.1
18. 1.1, 5.6
19. -2.2, 5.0
20. -3.9, 3.3
21. -5.6, 2.2
22. -3.3, 3.3
23. -7.2, 4.4
24. -5.6, 3.3
25. -2.2, 5.6
26. 0.6, 6.7
27. -8.6, 3.9
28. -0.6, 6.1
29. 1.7, 9.4
30. -1,7, 7.2
31. -2.8, 8.3.     

April

1. -1.1, 8.3
2. -2.2, 8.9
3. 2.2, 7.8
4. -0.6, 7.8
5. 0.6, 6.1
6. -0.6, 7.2
7. -1.7, 5.6
8. 0.6, 6.1
9. -1.1, 3.9
10. -2.2, 5.0
11. -2.3, 7.8
12. -2.8, 5.6
13. 0.6, 6.7
14. 1.1, 10.6
15. -0.6, 10.6
16. 0.6, 6.7
17. 1.1, 5.6
18. 3.3, 8.9
19. 4.4, 10.6
20. 2.2, 13.9
21. 0.6, 11.7
22. 3.3, 11.7
23. 2.2, 7.8
24. 5.0, 14.4
25. 2.2, 15.0
26. 7.2, 15.6
27. 4.4, 14.4
28. 4.4, 16.1
29. 4.4, 13.9
30. 8.3, 14.4

May

1. 7.8, 16.1
2. 6.7, 17.8
3. 6.7, 18.9
4. 5.0, 13.9
5. 5.0, 14.4
6. 3.9, 12.8
7. 1.1, 15.0
8. 6.7, 11.1
9. 1.1, 8.3
10. 1.1, 9.4
11. 1.7, 12.2
12. 5.0, 11.1
13. 3.3, 16.7
14. 4.4, 15.0
15. 6.7, 13.9
16. 6.1, 13.3
17. 4.4, 20.6
18. 6.1, 11.1
19. 4.4, 12.8
20. 5.0, 9.4
21. 3.3, 12.2
22. 3.9, 9.4
23. 5.6, 12.8
24. 5.0, 18.3
25. 7.2, 18.3
26. 6.7, 20.0
27. 5.6, 20.6
28. 7.2, 18.9
29. 6.7, 21.7
30. 1.0, 18.9
31. 7.8, 19.4

Some interesting readings, that mid March to mid April was exceptionally cold for the time of the year.

[Weather-history]

On 08/05/2018 at 12:57, Weather-history said:

May 1833 has been a month that has fascinated me because of its remarkable CET value with a CET of 15.1, way ahead of any other May in the last 360 years. We experienced the equivalent of this with December 2015.

The readings from were recorded by Orlando Whistlecraft (1810-93) who was a meteorologist and and an almanac compiler. The readings were recorded from Thwaite in Suffolk.

I converted the readings into Celsius from Fahrenheit 

May 1833 (first number is the minimum, the second number is the maximum) 

1. 5.0, 13.9
2. 9.4, 15.0
3. 10.6, 20.6
4. 12.8, 26.7
5. 12.2, 21.7
6. 6.7, 20.6
7. 7.2, 20.6
8. 8.9, 23.4
9. 8.9, 24.4
10. 9.4, 18.9
11. 10.6, 19.4
12. 8.9, 23.9
13. 12.2, 23.9
14. 10.0, 25.0
15. 12.8, 27.8
16. 15.0, 28.9
17. 14.4, 29.7
18. 14.4, 22.2
19. 8.9, 15.6
20. 10.6, 20.6
21. 11.1, 23.9
22. 8.3, 23.9
23. 9.4, 23.9
24. 8.9, 24.4
25. 8.9, 26.7
26. 10.0, 14.4
27. 8.3, 19.4
28. 8.3, 22.8
29. 8.9, 18.9
30. 3.9, 18.9
31. 3.9, 22.2

22 days above 20C

 

Some articles from this month from the Guardian/Observer

 

[Weather-history]

On 08/05/2018 at 12:57, Weather-history said:

 

Coldest Spring on record is 1837 with a CET of 5.6

March: 2.3

April: 4.7

May: 9.9

Here are the readings that were recorded from Thwaite for this remarkable season.

First number is the minimum, second number is the maximum

March

1. -2.2, 4.4
2. -0.6, 4.4
3. -0.6, 6.1
4. 2.8, 5.6
5. 0.0, 8.3
6. 1.7, 5.0
7. 0.0, 8.3
8. 0.0, 8.9
9. 3.9, 10.6
10. 2.8, 9.4
11. 0.0, 8.3
12. 0.6, 7.8
13. 0.0, 5.0
14. 0.0, 6.7
15. 1.7, 3.9
16. 2.2, 4.4
17. 1.7, 6.1
18. 1.1, 5.6
19. -2.2, 5.0
20. -3.9, 3.3
21. -5.6, 2.2
22. -3.3, 3.3
23. -7.2, 4.4
24. -5.6, 3.3
25. -2.2, 5.6
26. 0.6, 6.7
27. -8.6, 3.9
28. -0.6, 6.1
29. 1.7, 9.4
30. -1,7, 7.2
31. -2.8, 8.3.     

April

1. -1.1, 8.3
2. -2.2, 8.9
3. 2.2, 7.8
4. -0.6, 7.8
5. 0.6, 6.1
6. -0.6, 7.2
7. -1.7, 5.6
8. 0.6, 6.1
9. -1.1, 3.9
10. -2.2, 5.0
11. -2.3, 7.8
12. -2.8, 5.6
13. 0.6, 6.7
14. 1.1, 10.6
15. -0.6, 10.6
16. 0.6, 6.7
17. 1.1, 5.6
18. 3.3, 8.9
19. 4.4, 10.6
20. 2.2, 13.9
21. 0.6, 11.7
22. 3.3, 11.7
23. 2.2, 7.8
24. 5.0, 14.4
25. 2.2, 15.0
26. 7.2, 15.6
27. 4.4, 14.4
28. 4.4, 16.1
29. 4.4, 13.9
30. 8.3, 14.4

May

1. 7.8, 16.1
2. 6.7, 17.8
3. 6.7, 18.9
4. 5.0, 13.9
5. 5.0, 14.4
6. 3.9, 12.8
7. 1.1, 15.0
8. 6.7, 11.1
9. 1.1, 8.3
10. 1.1, 9.4
11. 1.7, 12.2
12. 5.0, 11.1
13. 3.3, 16.7
14. 4.4, 15.0
15. 6.7, 13.9
16. 6.1, 13.3
17. 4.4, 20.6
18. 6.1, 11.1
19. 4.4, 12.8
20. 5.0, 9.4
21. 3.3, 12.2
22. 3.9, 9.4
23. 5.6, 12.8
24. 5.0, 18.3
25. 7.2, 18.3
26. 6.7, 20.0
27. 5.6, 20.6
28. 7.2, 18.9
29. 6.7, 21.7
30. 1.0, 18.9
31. 7.8, 19.4

Some interesting readings, that mid March to mid April was exceptionally cold for the time of the year.

Guardian/Observer reports from Spring 1837

Late Feb/March

April

May

[Earthshine]

15.1°C is a really extraordinary CET for a spring month.  And even more bizarre how we have never had a May with a 14°C+ CET since.

[Weather-history]

Always fascinated me, May 1833

Reports from May 1833

Canterbury thunderstorm and other storm reports 

 

 

Agricultural

 

Data

Cambridgeshire

Plymouth

 

 

 

Edited May 14, 2023 by Weather-history