St. Helena Weather in 2018

2018 St. Helena Weather Extremes
Highest temperature	106 °F	June 23
Lowest temperature	29 °F	February 24
Highest daily low	67 °F	October 8
Lowest daily high	48 °F	March 3
Most daily precipitation	2.1 inches	January 8
Total annual precipitation	22.1 inches	-

Rank	Temperature	Date
1	106 °F	Jun 23
2	105 °F	Jul 25
3	103 °F	Jun 30
4	101 °F	Aug 10
4	101 °F	Aug 9
6	100 °F	Jul 9
6	100 °F	Jun 22
8	99 °F	Jun 12
8	99 °F	Jun 3
8	99 °F	Jun 2

Rank	Temperature	Date
1	29 °F	February 24
1	29 °F	February 23
3	30 °F	February 20
4	31 °F	March 17
4	31 °F	March 5
4	31 °F	February 28
7	32 °F	November 18
7	32 °F	March 4
7	32 °F	February 22
10	33 °F	December 31
10	33 °F	March 18
10	33 °F	March 3
10	33 °F	March 2
10	33 °F	February 21

January 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	70	42	0.00
January 2	70	42	0.00
January 3	62	50	0.01
January 4	60	52	0.22
January 5	60	51	0.25
January 6	61	42	0.02
January 7	53	38	0.01
January 8	54	48	2.14
January 9	61	48	0.16
January 10	57	46	0.03
January 11	57	49	0.01
January 12	68	45	0.01
January 13	67	39	0.00
January 14	59	43	0.01
January 15	61	43	0.01
January 16	59	52	0.08
January 17	64	51	0.01
January 18	57	48	0.00
January 19	58	47	0.00
January 20	59	35	0.01
January 21	54	34	0.43
January 22	59	42	0.65
January 23	60	37	0.00
January 24	56	39	0.58
January 25	52	38	0.08
January 26	57	35	0.01
January 27	62	42	0.00
January 28	72	39	0.00
January 29	65	43	0.00
January 30	70	38	0.01
January 31	74	40	0.00

February 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	79	44	0.00
February 2	83	46	0.00
February 3	72	46	0.00
February 4	83	51	0.00
February 5	77	47	0.00
February 6	80	52	0.00
February 7	77	48	0.00
February 8	78	45	0.00
February 9	78	45	0.00
February 10	72	49	0.00
February 11	67	58	0.00
February 12	60	36	0.00
February 13	67	42	0.00
February 14	63	35	0.00
February 15	67	38	0.00
February 16	73	34	0.00
February 17	72	38	0.00
February 18	56	39	0.00
February 19	53	35	0.00
February 20	54	30	0.00
February 21	58	33	0.00
February 22	54	32	0.00
February 23	57	29	0.00
February 24	56	29	0.00
February 25	66	35	0.00
February 26	56	41	0.12
February 27	62	37	0.03
February 28	57	31	0.04

March 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	57	43	0.54
March 2	50	33	0.42
March 3	48	33	0.13
March 4	58	32	0.05
March 5	65	31	0.04
March 6	71	35	0.02
March 7	71	45	0.01
March 8	67	48	0.04
March 9	68	43	0.00
March 10	63	47	0.01
March 11	73	42	0.01
March 12	72	47	0.11
March 13	61	49	0.55
March 14	58	43	0.14
March 15	52	37	0.65
March 16	55	38	1.60
March 17	53	31	0.03
March 18	59	33	0.00
March 19	66	35	0.00
March 20	56	49	0.53
March 21	63	51	0.62
March 22	61	44	1.45
March 23	59	35	0.04
March 24	57	40	0.07
March 25	61	36	0.00
March 26	68	40	0.00
March 27	81	55	0.00
March 28	86	48	0.00
March 29	89	52	0.00
March 30	84	49	0.00
March 31	80	48	0.00

April 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	80	45	0.00
April 2	78	51	0.00
April 3	78	43	0.00
April 4	69	49	0.00
April 5	73	49	0.22
April 6	61	54	1.54
April 7	66	51	0.24
April 8	72	45	0.00
April 9	81	46	0.00
April 10	66	51	0.00
April 11	61	45	0.25
April 12	60	40	0.05
April 13	74	40	0.00
April 14	78	46	0.00
April 15	63	44	0.28
April 16	54	41	0.09
April 17	76	35	0.00
April 18	63	45	0.00
April 19	73	40	0.00
April 20	80	44	0.00
April 21	85	47	0.00
April 22	87	48	0.00
April 23	88	52	0.00
April 24	78	52	0.00
April 25	72	49	0.00
April 26	72	49	0.00
April 27	67	49	0.00
April 28	61	47	0.00
April 29	68	48	0.00
April 30	71	46	0.09

May 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	76	44	0.01
May 2	77	52	0.00
May 3	76	49	0.00
May 4	86	48	0.00
May 5	78	50	0.00
May 6	77	50	0.00
May 7	86	51	0.00
May 8	85	50	0.00
May 9	78	53	0.00
May 10	83	52	0.00
May 11	82	50	0.00
May 12	84	54	0.00
May 13	65	53	0.00
May 14	70	52	0.00
May 15	68	52	0.00
May 16	67	54	0.00
May 17	78	48	0.00
May 18	79	52	0.00
May 19	81	50	0.00
May 20	78	49	0.00
May 21	82	48	0.00
May 22	76	55	0.00
May 23	64	55	0.00
May 24	72	55	0.00
May 25	61	55	0.18
May 26	74	55	0.01
May 27	87	51	0.00
May 28	95	55	0.00
May 29	95	57	0.00
May 30	77	52	0.00
May 31	75	51	0.00

June 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	86	49	0.00
June 2	99	53	0.00
June 3	99	59	0.00
June 4	89	56	0.00
June 5	85	49	0.00
June 6	82	51	0.00
June 7	84	50	0.00
June 8	87	55	0.00
June 9	73	57	0.00
June 10	83	48	0.00
June 11	91	54	0.00
June 12	99	57	0.00
June 13	97	56	0.00
June 14	83	55	0.00
June 15	78	55	0.00
June 16	80	54	0.00
June 17	80	52	0.00
June 18	86	55	0.00
June 19	89	53	0.00
June 20	88	52	0.00
June 21	91	49	0.00
June 22	100	55	0.00
June 23	106	62	0.00
June 24	84	59	0.00
June 25	83	56	0.00
June 26	88	56	0.00
June 27	81	52	0.00
June 28	88	51	0.00
June 29	96	55	0.00
June 30	103	59	0.00

July 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	87	58	0.00
July 2	83	56	0.00
July 3	81	55	0.00
July 4	76	53	0.00
July 5	88	51	0.00
July 6	90	63	0.00
July 7	98	59	0.00
July 8	94	55	0.00
July 9	100	54	0.00
July 10	98	63	0.00
July 11	92	58	0.00
July 12	93	56	0.00
July 13	96	66	0.00
July 14	95	60	0.00
July 15	92	58	0.00
July 16	95	55	0.00
July 17	94	55	0.00
July 18	94	59	0.00
July 19	97	59	0.00
July 20	92	54	0.00
July 21	91	61	0.00
July 22	94	60	0.00
July 23	96	60	0.00
July 24	96	58	0.00
July 25	105	57	0.00
July 26	93	58	0.00
July 27	90	53	0.00
July 28	92	54	0.00
July 29	90	55	0.00
July 30	93	57	0.00
July 31	89	57	0.00

August 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	89	57	0.00
August 2	89	53	0.00
August 3	97	56	0.00
August 4	96	56	0.00
August 5	91	56	0.00
August 6	98	55	0.00
August 7	86	58	0.00
August 8	92	57	0.00
August 9	101	56	0.00
August 10	101	55	0.00
August 11	93	60	0.00
August 12	92	57	0.00
August 13	87	59	0.00
August 14	84	55	0.00
August 15	88	57	0.00
August 16	92	54	0.00
August 17	98	54	0.00
August 18	98	54	0.00
August 19	91	52	0.00
August 20	81	58	0.00
August 21	78	55	0.00
August 22	83	59	0.00
August 23	81	56	0.00
August 24	81	55	0.00
August 25	85	55	0.00
August 26	81	54	0.00
August 27	78	55	0.00
August 28	76	57	0.00
August 29	83	50	0.00
August 30	82	54	0.00
August 31	89	55	0.00

September 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	88	53	0.00
September 2	92	57	0.00
September 3	87	54	0.00
September 4	88	54	0.00
September 5	83	53	0.00
September 6	88	54	0.00
September 7	96	52	0.00
September 8	95	52	0.00
September 9	95	52	0.00
September 10	96	58	0.00
September 11	92	52	0.00
September 12	80	55	0.00
September 13	81	52	0.00
September 14	84	49	0.00
September 15	79	53	0.00
September 16	83	46	0.00
September 17	81	51	0.00
September 18	83	52	0.00
September 19	90	50	0.00
September 20	95	54	0.00
September 21	92	52	0.00
September 22	87	50	0.00
September 23	88	52	0.00
September 24	93	49	0.00
September 25	91	49	0.00
September 26	98	49	0.00
September 27	90	52	0.00
September 28	80	51	0.00
September 29	68	52	0.00
September 30	78	60	0.00

October 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	79	57	0.07
October 2	81	61	0.78
October 3	72	61	0.00
October 4	70	54	0.00
October 5	78	49	0.00
October 6	80	56	0.00
October 7	82	67	0.00
October 8	87	67	0.00
October 9	74	57	0.00
October 10	73	54	0.00
October 11	76	51	0.00
October 12	88	49	0.00
October 13	84	48	0.00
October 14	81	48	0.00
October 15	87	52	0.00
October 16	88	44	0.00
October 17	81	43	0.00
October 18	82	45	0.00
October 19	90	46	0.00
October 20	84	46	0.00
October 21	76	44	0.00
October 22	72	47	0.00
October 23	71	47	0.00
October 24	79	45	0.00
October 25	84	47	0.00
October 26	85	48	0.00
October 27	83	51	0.00
October 28	76	50	0.00
October 29	76	50	0.00
October 30	80	49	0.00
October 31	84	52	0.00

November 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	90	57	0.00
November 2	86	51	0.00
November 3	89	53	0.00
November 4	83	50	0.00
November 5	82	52	0.00
November 6	84	42	0.00
November 7	81	43	0.00
November 8	73	49	0.00
November 9	67	38	0.00
November 10	71	35	0.00
November 11	75	42	0.00
November 12	75	40	0.00
November 13	70	38	0.00
November 14	72	35	0.00
November 15	72	37	0.00
November 16	67	37	0.00
November 17	68	35	0.00
November 18	71	32	0.00
November 19	74	37	0.00
November 20	67	36	0.00
November 21	58	49	0.53
November 22	63	50	0.95
November 23	60	52	0.73
November 24	68	55	0.10
November 25	68	51	0.00
November 26	70	43	0.01
November 27	57	46	0.22
November 28	64	53	0.44
November 29	58	50	1.06
November 30	62	43	0.00

December 2018 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	58	42	0.48
December 2	58	36	0.12
December 3	56	35	0.00
December 4	57	48	0.00
December 5	53	42	0.25
December 6	65	40	0.00
December 7	64	37	0.00
December 8	64	38	0.00
December 9	58	38	0.00
December 10	64	43	0.01
December 11	61	37	0.01
December 12	68	42	0.00
December 13	67	37	0.00
December 14	57	44	0.24
December 15	60	52	0.04
December 16	57	46	0.79
December 17	72	48	0.00
December 18	55	43	0.01
December 19	61	48	0.02
December 20	57	45	0.01
December 21	63	42	0.11
December 22	54	41	0.02
December 23	58	41	0.01
December 24	57	45	0.03
December 25	62	41	0.03
December 26	61	39	0.02
December 27	59	40	0.01
December 28	62	45	0.01
December 29	61	38	0.01
December 30	60	35	0.01
December 31	55	33	0.00