St. Helena Weather in 1940

Historical record of St. Helena, California weather for the year 1940 based on NOAA data.

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1940 St. Helena Weather Extremes
Highest temperature	107 °F	August 10
Lowest temperature	24 °F	December 14
Highest daily low	60 °F	October 17
Lowest daily high	43 °F	December 14
Most daily precipitation	4.3 inches	February 27
Total annual precipitation	60.4 inches	-

What was the hottest temperature in St. Helena in 1940?

The highest temperature recorded in St. Helena, California in 1940 was 107 °F which happened on August 10.

Highest Temperatures: All-Time By Year

Highest Temperatures in St. Helena in 1940

Rank	Temperature	Date
1	107 °F	Aug 10
2	102 °F	Jul 5
3	101 °F	Jul 24
3	101 °F	Jun 26
5	100 °F	Jul 23
5	100 °F	Jul 4
5	100 °F	Jun 20
8	98 °F	Jul 2
9	97 °F	Jul 25
10	96 °F	Jun 8

What was the coldest temperature in St. Helena in 1940?

The lowest temperature recorded in St. Helena, California in 1940 was 24 °F which happened 2 different times.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in St. Helena in 1940

Rank	Temperature	Date
1	24 °F	December 14
1	24 °F	December 13
3	25 °F	January 18
4	26 °F	December 11
4	26 °F	January 14
6	27 °F	January 17
6	27 °F	January 16
6	27 °F	January 15
9	28 °F	December 12
9	28 °F	November 23
9	28 °F	January 13

January 1940 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	60	54	1.46
January 2	63	54	1.55
January 3	56	47	0.24
January 4	60	48	1.01
January 5	50	33	0.06
January 6	52	36	0.16
January 7	52	44	1.28
January 8	58	51	2.14
January 9	59	48	0.50
January 10	53	49	0.64
January 11	57	50	0.44
January 12	56	40	0.00
January 13	61	28	0.00
January 14	59	26	0.00
January 15	64	27	0.00
January 16	65	27	0.00
January 17	58	27	0.00
January 18	49	25	0.00
January 19	52	30	0.00
January 20	52	31	0.00
January 21	53	30	0.00
January 22	49	33	0.00
January 23	55	40	0.22
January 24	54	42	0.12
January 25	53	48	2.54
January 26	67	52	0.86
January 27	69	43	0.00
January 28	66	43	0.00
January 29	72	47	0.00
January 30	60	43	0.02
January 31	60	50	0.24

February 1940 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	67	44	0.00
February 2	56	42	0.03
February 3	65	50	1.00
February 4	60	51	0.22
February 5	61	52	0.00
February 6	63	51	0.26
February 7	62	38	0.03
February 8	67	35	0.00
February 9	68	38	0.00
February 10	63	41	0.00
February 11	63	34	0.00
February 12	57	32	0.00
February 13	52	38	1.48
February 14	58	39	0.62
February 15	59	30	0.00
February 16	58	41	0.00
February 17	57	47	1.23
February 18	60	32	0.00
February 19	64	30	0.00
February 20	66	32	0.00
February 21	60	40	0.00
February 22	61	45	0.01
February 23	56	46	0.05
February 24	64	48	0.02
February 25	60	55	0.42
February 26	59	53	2.52
February 27	60	56	4.30
February 28	65	54	1.32
February 29	61	41	0.59

March 1940 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	64	39	0.00
March 2	67	39	0.02
March 3	72	46	0.00
March 4	72	41	0.00
March 5	73	39	0.00
March 6	75	38	0.00
March 7	75	41	0.00
March 8	72	46	0.00
March 9	61	39	0.00
March 10	59	31	0.00
March 11	62	31	0.00
March 12	66	30	0.00
March 13	68	30	0.00
March 14	72	32	0.00
March 15	64	43	0.05
March 16	69	50	0.06
March 17	73	40	0.00
March 18	75	39	0.00
March 19	76	43	0.00
March 20	76	43	0.00
March 21	72	45	0.00
March 22	74	44	0.00
March 23	73	42	0.00
March 24	63	54	0.08
March 25	63	43	0.00
March 26	63	52	2.09
March 27	63	44	0.08
March 28	60	47	0.46
March 29	61	44	1.96
March 30	57	49	3.09
March 31	63	43	0.07

April 1940 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	69	41	0.00
April 2	60	41	0.00
April 3	63	45	0.10
April 4	61	35	0.00
April 5	66	36	0.00
April 6	69	38	0.00
April 7	63	49	0.16
April 8	65	51	0.04
April 9	73	43	0.00
April 10	82	42	0.00
April 11	85	43	0.00
April 12	86	48	0.00
April 13	86	48	0.00
April 14	79	45	0.00
April 15	72	42	0.00
April 16	79	43	0.00
April 17	81	43	0.00
April 18	83	45	0.00
April 19	79	45	0.00
April 20	82	37	0.00
April 21	74	40	0.00
April 22	72	50	0.00
April 23	69	40	0.00
April 24	65	45	0.00
April 25	57	45	1.18
April 26	63	46	0.21
April 27	68	44	0.00
April 28	71	42	0.00
April 29	71	47	0.00
April 30	80	44	0.00

May 1940 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	82	44	0.00
May 2	74	49	0.05
May 3	66	37	0.00
May 4	67	47	0.56
May 5	79	40	0.00
May 6	75	40	0.00
May 7	80	40	0.00
May 8	87	43	0.00
May 9	90	49	0.00
May 10	87	47	0.00
May 11	83	49	0.00
May 12	83	48	0.00
May 13	90	43	0.00
May 14	89	49	0.00
May 15	80	49	0.00
May 16	84	43	0.00
May 17	82	48	0.00
May 18	89	51	0.00
May 19	90	50	0.00
May 20	81	50	0.00
May 21	87	52	0.00
May 22	85	54	0.00
May 23	80	51	0.00
May 24	85	53	0.00
May 25	81	51	0.00
May 26	84	54	0.00
May 27	74	43	0.00
May 28	70	50	0.00
May 29	74	52	0.00
May 30	68	53	0.71
May 31	69	50	0.01

June 1940 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	72	57	0.04
June 2	81	52	0.00
June 3	81	50	0.00
June 4	88	47	0.00
June 5	90	51	0.00
June 6	91	48	0.00
June 7	93	51	0.00
June 8	96	52	0.00
June 9	95	49	0.00
June 10	95	50	0.00
June 11	91	49	0.00
June 12	92	51	0.00
June 13	95	50	0.00
June 14	93	50	0.00
June 15	87	54	0.00
June 16	72	55	0.00
June 17	84	56	0.00
June 18	75	51	0.00
June 19	83	47	0.00
June 20	100	50	0.00
June 21	85	52	0.00
June 22	89	52	0.00
June 23	88	48	0.00
June 24	85	52	0.00
June 25	86	52	0.00
June 26	101	52	0.00
June 27	86	52	0.00
June 28	83	53	0.00
June 29	85	54	0.00
June 30	89	53	0.00

July 1940 St. Helena Weather

Day	High (°F)	Low (°F)
July 1	88	51
July 2	98	46
July 3	94	51
July 4	100	50
July 5	102	50
July 6	94	50
July 7	92	48
July 8	89	45
July 9	88	44
July 10	91	44
July 11	89	48
July 12	85	51
July 13	88	49
July 14	85	53
July 15	78	55
July 16	80	56
July 17	81	46
July 18	80	47
July 19	82	46
July 20	85	46
July 21	90	45
July 22	93	48
July 23	100	48
July 24	101	50
July 25	97	49
July 26	89	48
July 27	85	52
July 28	86	58
July 29	87	58
July 30	91	47
July 31	90	48

August 1940 St. Helena Weather

Day	High (°F)	Low (°F)
August 1	87	45
August 2	95	47
August 3	93	56
August 4	90	56
August 5	90	51
August 6	91	51
August 7	94	44
August 8	95	46
August 9	92	48
August 10	107	49
August 11	95	52
August 12	91	56
August 13	89	52
August 14	79	43
August 15	79	53
August 16	88	58
August 17	89	48
August 18	89	47
August 19	92	55
August 20	92	45
August 21	83	49
August 22	79	53
August 23	73	53
August 24	83	53
August 25	76	54
August 26	83	53
August 27	89	51
August 28	94	50
August 29	89	51
August 30	86	52
August 31	82	55

September 1940 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	88	46	0.00
September 2	80	52	0.00
September 3	76	46	0.02
September 4	81	40	0.00
September 5	79	53	0.03
September 6	82	52	0.07
September 7	78	52	0.00
September 8	85	45	0.00
September 9	78	51	0.00
September 10	84	47	0.00
September 11	81	50	0.00
September 12	78	57	0.00
September 13	80	59	0.01
September 14	83	49	0.00
September 15	78	48	0.00
September 16	82	56	0.00
September 17	80	59	0.00
September 18	78	49	0.00
September 19	85	43	0.00
September 20	91	42	0.00
September 21	92	42	0.00
September 22	84	42	0.00
September 23	77	47	0.00
September 24	85	45	0.00
September 25	88	45	0.00
September 26	77	46	0.00
September 27	79	46	0.00
September 28	81	43	0.00
September 29	86	47	0.00
September 30	91	42	0.00

October 1940 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	83	43	0.00
October 2	70	36	0.04
October 3	75	36	0.00
October 4	80	40	0.00
October 5	82	36	0.00
October 6	83	37	0.00
October 7	75	43	0.03
October 8	78	52	0.04
October 9	85	41	0.00
October 10	92	42	0.00
October 11	95	44	0.00
October 12	93	44	0.00
October 13	93	40	0.00
October 14	87	39	0.00
October 15	91	40	0.00
October 16	75	47	0.00
October 17	86	60	0.00
October 18	92	49	0.00
October 19	87	50	0.00
October 20	86	52	0.00
October 21	80	48	0.00
October 22	69	44	0.00
October 23	69	45	0.00
October 24	67	55	1.17
October 25	66	47	0.04
October 26	66	38	0.00
October 27	68	35	0.00
October 28	60	40	0.05
October 29	65	53	0.40
October 30	69	39	0.00
October 31	70	48	0.00

November 1940 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	67	52	0.36
November 2	61	49	0.10
November 3	62	40	0.03
November 4	64	33	0.00
November 5	52	37	0.24
November 6	54	52	1.76
November 7	63	53	0.37
November 8	62	47	0.00
November 9	62	42	0.01
November 10	63	31	0.00
November 11	64	37	0.00
November 12	69	39	0.00
November 13	71	41	0.00
November 14	80	38	0.00
November 15	79	36	0.00
November 16	70	39	0.00
November 17	65	45	0.00
November 18	66	35	0.00
November 19	69	44	0.00
November 20	58	31	0.00
November 21	61	31	0.00
November 22	66	40	0.00
November 23	66	28	0.00
November 24	58	32	0.00
November 25	69	32	0.00
November 26	71	38	0.00
November 27	67	32	0.00
November 28	69	34	0.00
November 29	61	37	0.00
November 30	72	34	0.00

December 1940 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	73	35	0.00
December 2	76	35	0.00
December 3	75	34	0.00
December 4	73	35	0.00
December 5	73	36	0.00
December 6	68	42	0.04
December 7	72	33	0.00
December 8	74	32	0.00
December 9	76	33	0.00
December 10	71	32	0.00
December 11	63	26	0.00
December 12	63	28	0.00
December 13	53	24	0.00
December 14	43	24	0.00
December 15	48	31	0.22
December 16	46	42	0.76
December 17	61	42	1.20
December 18	63	49	3.36
December 19	58	42	0.00
December 20	58	52	0.72
December 21	58	53	2.74
December 22	55	48	0.22
December 23	61	50	1.22
December 24	58	45	1.52
December 25	54	40	2.68
December 26	53	48	1.07
December 27	58	48	0.68
December 28	54	49	0.32
December 29	57	50	0.25
December 30	58	42	0.02
December 31	58	30	0.00

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Weather Station Details

Years	Station	Coordinates
1907–2023	Saint Helena	location