St. Helena Weather in 2015

Historical record of St. Helena, California weather for the year 2015 based on NOAA data.

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2015 St. Helena Weather Extremes
Highest temperature	105 °F	September 10
Lowest temperature	25 °F	December 27
Highest daily low	67 °F	July 20
Lowest daily high	48 °F	December 27
Most daily precipitation	2.8 inches	February 6
Total annual precipitation	13.2 inches	-

What was the hottest temperature in St. Helena in 2015?

The highest temperature recorded in St. Helena, California in 2015 was 105 °F which happened 3 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in St. Helena in 2015

Rank	Temperature	Date
1	105 °F	Sep 10
1	105 °F	Aug 16
1	105 °F	Jun 30
4	104 °F	Sep 11
4	104 °F	Sep 9
4	104 °F	Jul 30
4	104 °F	Jul 29
8	103 °F	Sep 12
8	103 °F	Jul 28
8	103 °F	Jun 12

What was the coldest temperature in St. Helena in 2015?

The lowest temperature recorded in St. Helena, California in 2015 was 25 °F which happened on Dec 27.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in St. Helena in 2015

Rank	Temperature	Date
1	25 °F	December 27
2	28 °F	December 2
2	28 °F	November 29
4	29 °F	December 31
5	30 °F	December 30
5	30 °F	January 2
7	31 °F	November 30
7	31 °F	January 30
7	31 °F	January 3
10	32 °F	December 16

January 2015 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	58	35	0.00
January 2	56	30	0.00
January 3	58	31	0.00
January 4	61	35	0.00
January 5	65	35	0.00
January 6	71	40	0.00
January 7	76	38	0.00
January 8	65	41	0.00
January 9	67	n/a	0.00
January 10	61	42	0.00
January 11	62	43	0.00
January 12	67	41	0.00
January 13	67	45	0.00
January 14	65	37	0.00
January 15	58	37	0.00
January 16	55	44	0.00
January 17	63	51	0.03
January 18	65	53	0.00
January 19	68	52	0.00
January 20	63	44	0.00
January 21	62	37	0.00
January 22	75	39	0.00
January 23	n/a	n/a	n/a
January 24	63	42	0.00
January 25	69	37	0.00
January 26	67	41	0.00
January 27	63	49	0.00
January 28	70	49	0.00
January 29	70	42	0.00
January 30	71	31	0.00
January 31	80	52	0.00

February 2015 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	80	40	0.00
February 2	80	40	0.00
February 3	70	48	0.00
February 4	68	44	0.00
February 5	62	49	0.00
February 6	60	53	2.80
February 7	65	57	1.10
February 8	64	56	1.05
February 9	64	53	1.18
February 10	65	40	0.00
February 11	69	41	0.00
February 12	74	43	0.00
February 13	76	46	0.00
February 14	79	45	0.00
February 15	78	43	0.00
February 16	76	44	0.00
February 17	71	49	0.00
February 18	68	51	0.00
February 19	67	50	0.00
February 20	69	49	0.00
February 21	67	42	0.00
February 22	64	46	0.00
February 23	63	51	0.00
February 24	72	38	0.00
February 25	72	37	0.00
February 26	73	43	0.00
February 27	70	48	0.00
February 28	61	43	0.00

March 2015 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	67	38	0.00
March 2	62	41	0.00
March 3	68	38	0.00
March 4	71	37	0.00
March 5	71	38	0.00
March 6	76	38	0.00
March 7	78	41	0.00
March 8	76	42	0.00
March 9	75	42	0.00
March 10	75	45	0.00
March 11	68	52	0.00
March 12	77	45	0.00
March 13	78	50	0.00
March 14	82	55	0.00
March 15	81	54	0.00
March 16	72	55	0.00
March 17	75	50	0.00
March 18	78	46	0.00
March 19	82	44	0.00
March 20	82	46	0.00
March 21	81	46	0.00
March 22	70	53	0.00
March 23	66	47	0.30
March 24	67	49	0.00
March 25	81	48	0.00
March 26	86	48	0.00
March 27	80	52	0.00
March 28	86	46	0.00
March 29	84	46	0.00
March 30	86	44	0.00
March 31	86	52	0.00

April 2015 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	70	44	0.00
April 2	73	51	0.00
April 3	76	42	0.00
April 4	72	43	0.00
April 5	66	43	0.11
April 6	59	36	0.00
April 7	58	45	1.27
April 8	62	39	0.05
April 9	70	40	0.00
April 10	72	41	0.00
April 11	75	44	0.00
April 12	81	46	0.00
April 13	78	45	0.00
April 14	69	45	0.00
April 15	77	47	0.00
April 16	83	60	0.00
April 17	84	44	0.00
April 18	82	46	0.00
April 19	82	50	0.00
April 20	76	52	0.00
April 21	73	53	0.00
April 22	74	54	0.00
April 23	76	51	0.00
April 24	73	53	0.00
April 25	73	50	0.00
April 26	79	47	0.00
April 27	88	54	0.00
April 28	85	52	0.00
April 29	83	49	0.00
April 30	87	53	0.00

May 2015 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	88	54	0.00
May 2	80	50	0.00
May 3	72	50	0.00
May 4	74	51	0.00
May 5	88	50	0.00
May 6	77	44	0.00
May 7	74	48	0.00
May 8	76	46	0.00
May 9	77	50	0.00
May 10	74	49	0.00
May 11	75	47	0.00
May 12	70	47	0.00
May 13	66	48	0.00
May 14	64	48	0.04
May 15	72	45	0.00
May 16	73	48	0.00
May 17	69	52	0.00
May 18	73	51	0.00
May 19	75	52	0.00
May 20	73	51	0.00
May 21	70	55	0.00
May 22	76	53	0.00
May 23	76	55	0.00
May 24	74	53	0.00
May 25	76	52	0.00
May 26	77	52	0.00
May 27	79	53	0.00
May 28	81	52	0.00
May 29	81	51	0.00
May 30	82	51	0.00
May 31	76	52	0.00

June 2015 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	81	52	0.00
June 2	83	52	0.00
June 3	80	51	0.00
June 4	84	50	0.00
June 5	85	55	0.00
June 6	83	56	0.00
June 7	91	51	0.00
June 8	100	51	0.00
June 9	90	60	0.00
June 10	77	62	0.04
June 11	102	59	0.00
June 12	103	57	0.00
June 13	84	57	0.00
June 14	81	54	0.00
June 15	80	52	0.00
June 16	89	51	0.00
June 17	91	53	0.00
June 18	86	50	0.00
June 19	90	51	0.00
June 20	81	53	0.00
June 21	83	49	0.00
June 22	92	52	0.00
June 23	92	52	0.00
June 24	90	55	0.00
June 25	99	57	0.00
June 26	96	59	0.00
June 27	87	57	0.00
June 28	88	62	0.00
June 29	96	57	0.00
June 30	105	60	0.00

July 2015 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	92	63	0.00
July 2	89	65	0.00
July 3	92	61	0.01
July 4	91	59	0.00
July 5	81	58	0.00
July 6	89	59	0.00
July 7	85	56	0.00
July 8	81	57	0.00
July 9	66	60	0.03
July 10	73	60	0.02
July 11	83	61	0.00
July 12	81	58	0.00
July 13	89	56	0.00
July 14	85	56	0.00
July 15	90	60	0.00
July 16	89	61	0.00
July 17	92	59	0.00
July 18	89	58	0.00
July 19	95	61	0.00
July 20	97	67	0.00
July 21	88	59	0.00
July 22	85	57	0.00
July 23	81	57	0.00
July 24	89	57	0.00
July 25	86	52	0.00
July 26	85	58	0.00
July 27	94	55	0.00
July 28	103	56	0.00
July 29	104	57	0.00
July 30	104	52	0.00
July 31	83	n/a	0.00

August 2015 St. Helena Weather

Day	High (°F)	Low (°F)
August 1	89	60
August 2	94	59
August 3	88	58
August 4	83	53
August 5	91	57
August 6	91	58
August 7	86	60
August 8	83	57
August 9	94	57
August 10	90	62
August 11	86	58
August 12	87	51
August 13	86	58
August 14	91	55
August 15	100	57
August 16	105	60
August 17	102	61
August 18	89	58
August 19	87	56
August 20	85	60
August 21	83	58
August 22	85	58
August 23	86	60
August 24	91	56
August 25	93	55
August 26	95	54
August 27	99	59
August 28	98	64
August 29	83	63
August 30	89	55
August 31	91	57

September 2015 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	84	60	0.00
September 2	83	54	0.00
September 3	82	52	0.00
September 4	90	50	0.00
September 5	85	48	0.00
September 6	90	49	0.00
September 7	97	53	0.00
September 8	101	54	0.00
September 9	104	58	0.00
September 10	105	61	0.00
September 11	104	57	0.00
September 12	103	59	0.00
September 13	91	64	0.00
September 14	83	63	0.00
September 15	74	58	0.00
September 16	65	50	0.25
September 17	79	54	0.00
September 18	86	53	0.00
September 19	97	54	0.00
September 20	100	57	0.00
September 21	102	58	0.00
September 22	79	60	0.00
September 23	98	52	0.00
September 24	95	58	0.00
September 25	95	56	0.00
September 26	92	58	0.00
September 27	85	54	0.00
September 28	85	51	0.00
September 29	78	50	0.00
September 30	77	57	0.00

October 2015 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	77	57	0.00
October 2	90	54	0.00
October 3	86	50	0.00
October 4	87	57	0.08
October 5	79	52	0.00
October 6	82	54	0.00
October 7	85	52	0.00
October 8	88	57	0.00
October 9	90	54	0.00
October 10	86	55	0.00
October 11	88	54	0.00
October 12	95	53	0.00
October 13	95	54	0.00
October 14	95	57	0.00
October 15	87	59	0.00
October 16	85	56	0.00
October 17	74	58	0.00
October 18	76	52	0.00
October 19	78	50	0.00
October 20	84	52	0.00
October 21	87	50	0.00
October 22	84	48	0.00
October 23	83	50	0.00
October 24	81	50	0.00
October 25	79	51	0.00
October 26	81	46	0.00
October 27	70	54	0.00
October 28	80	47	0.03
October 29	80	51	0.00
October 30	86	50	0.00
October 31	84	51	0.00

November 2015 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	69	58	0.00
November 2	66	50	0.72
November 3	68	43	0.00
November 4	66	45	0.00
November 5	85	38	0.00
November 6	70	40	0.00
November 7	69	40	0.00
November 8	62	41	0.00
November 9	55	42	0.30
November 10	63	38	0.02
November 11	64	36	0.00
November 12	67	37	0.01
November 13	72	38	0.00
November 14	59	49	0.26
November 15	62	39	0.00
November 16	68	40	0.00
November 17	68	40	0.00
November 18	72	39	0.00
November 19	72	45	0.00
November 20	78	47	0.00
November 21	75	45	0.00
November 22	76	43	0.00
November 23	63	43	0.00
November 24	56	45	0.15
November 25	67	35	0.00
November 26	55	33	0.00
November 27	57	44	0.00
November 28	58	36	0.00
November 29	59	28	0.00
November 30	53	31	0.01

December 2015 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	62	34	0.00
December 2	63	28	0.00
December 3	58	42	0.42
December 4	59	42	0.36
December 5	56	39	0.01
December 6	56	46	0.44
December 7	62	54	0.01
December 8	60	49	0.01
December 9	60	49	0.16
December 10	60	49	0.61
December 11	56	42	0.09
December 12	54	39	0.04
December 13	55	46	0.09
December 14	57	35	0.01
December 15	58	37	0.05
December 16	58	32	0.18
December 17	52	38	0.06
December 18	53	47	0.03
December 19	56	47	0.02
December 20	49	36	0.01
December 21	59	47	0.02
December 22	63	55	0.01
December 23	61	36	0.01
December 24	51	37	0.01
December 25	53	33	0.01
December 26	56	35	0.00
December 27	48	25	0.65
December 28	51	34	0.00
December 29	56	33	0.00
December 30	56	30	0.00
December 31	56	29	0.00

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Weather Station Details

Years	Station	Coordinates
1907–2023	Saint Helena	location