St. Helena Weather in 1999

Historical record of St. Helena, California weather for the year 1999 based on NOAA data.

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1999 St. Helena Weather Extremes
Highest temperature	104 °F	July 13
Lowest temperature	29 °F	January 11
Highest daily low	65 °F	August 27
Lowest daily high	47 °F	February 21
Most daily precipitation	4.2 inches	February 7
Most daily snow	none	-
Total annual precipitation	29.2 inches	-
Total annual snow	none	-

What was the hottest temperature in St. Helena in 1999?

The highest temperature recorded in St. Helena, California in 1999 was 104 °F which happened on July 13.

Highest Temperatures: All-Time By Year

Highest Temperatures in St. Helena in 1999

Rank	Temperature	Date
1	104 °F	Jul 13
2	103 °F	Jul 2
2	103 °F	Jul 1
4	102 °F	Jul 12
5	100 °F	Aug 26
6	99 °F	Aug 23
7	98 °F	Sep 27
7	98 °F	Jun 30
9	97 °F	Jun 29
10	96 °F	Sep 30
10	96 °F	Aug 27

What was the coldest temperature in St. Helena in 1999?

The lowest temperature recorded in St. Helena, California in 1999 was 29 °F which happened 2 different times.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in St. Helena in 1999

Rank	Temperature	Date
1	29 °F	January 11
1	29 °F	January 10
3	30 °F	January 29
3	30 °F	January 24
3	30 °F	January 9
3	30 °F	January 8
3	30 °F	January 7
3	30 °F	January 5
9	31 °F	February 11
9	31 °F	February 10
9	31 °F	January 30
9	31 °F	January 13
9	31 °F	January 12
9	31 °F	January 6
9	31 °F	January 4
9	31 °F	January 2

January 1999 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	64	34	0.00
January 2	62	31	0.00
January 3	n/a	35	0.00
January 4	69	31	0.00
January 5	69	30	0.00
January 6	54	31	0.00
January 7	54	30	0.00
January 8	54	30	0.00
January 9	71	30	0.00
January 10	55	29	0.00
January 11	52	29	0.00
January 12	54	31	0.00
January 13	58	31	0.00
January 14	n/a	37	0.00
January 15	59	48	0.00
January 16	60	49	0.10
January 17	58	49	0.20
January 18	55	50	0.10
January 19	60	50	0.05
January 20	58	50	1.08
January 21	56	42	0.35
January 22	54	42	0.01
January 23	54	46	0.00
January 24	55	30	0.50
January 25	56	33	0.01
January 26	59	41	0.20
January 27	50	34	0.02
January 28	66	34	0.00
January 29	61	30	0.00
January 30	60	31	0.00
January 31	53	n/a	0.80

February 1999 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	57	34	0.00
February 2	60	32	0.00
February 3	63	32	0.00
February 4	66	38	0.00
February 5	62	32	0.00
February 6	62	34	0.20
February 7	54	n/a	4.20
February 8	58	46	0.27
February 9	56	42	2.50
February 10	50	31	0.01
February 11	56	31	0.00
February 12	55	32	0.00
February 13	59	36	0.00
February 14	56	40	0.18
February 15	57	35	0.00
February 16	57	36	0.30
February 17	53	45	1.48
February 18	62	45	0.00
February 19	62	37	0.48
February 20	64	39	0.00
February 21	47	37	1.03
February 22	54	38	0.10
February 23	59	46	0.00
February 24	61	45	0.00
February 25	61	42	1.10
February 26	55	35	0.08
February 27	57	40	0.00
February 28	62	49	0.08

March 1999 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	56	43	0.52
March 2	65	37	0.00
March 3	67	40	0.02
March 4	67	34	0.00
March 5	60	35	0.00
March 6	60	38	0.00
March 7	58	35	0.00
March 8	62	43	0.00
March 9	49	37	1.20
March 10	56	36	0.00
March 11	54	35	0.00
March 12	66	35	0.00
March 13	67	38	0.00
March 14	64	41	0.00
March 15	50	42	0.40
March 16	66	42	0.00
March 17	64	45	0.00
March 18	64	43	0.00
March 19	60	45	0.00
March 20	60	45	0.40
March 21	58	42	0.08
March 22	55	43	0.10
March 23	55	44	0.00
March 24	60	47	0.13
March 25	53	47	1.40
March 26	64	45	0.01
March 27	71	37	0.00
March 28	67	37	0.00
March 29	60	39	0.00
March 30	61	33	0.00
March 31	57	36	0.50

April 1999 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	59	33	0.00
April 2	64	38	0.00
April 3	70	44	0.00
April 4	70	42	0.00
April 5	67	43	0.00
April 6	53	39	0.55
April 7	59	38	0.00
April 8	62	38	0.82
April 9	48	32	0.31
April 10	60	33	0.00
April 11	49	44	1.25
April 12	61	38	0.05
April 13	74	42	0.00
April 14	74	49	0.00
April 15	86	49	0.00
April 16	85	52	0.00
April 17	86	51	0.00
April 18	86	46	0.00
April 19	81	50	0.00
April 20	76	48	0.00
April 21	73	47	0.00
April 22	75	56	0.00
April 23	80	51	0.00
April 24	n/a	n/a	0.00
April 25	74	50	0.00
April 26	65	50	0.00
April 27	69	38	0.00
April 28	65	39	0.00
April 29	68	n/a	0.00
April 30	77	47	0.00

May 1999 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	83	46	0.00
May 2	n/a	46	0.00
May 3	62	47	0.02
May 4	63	40	0.00
May 5	69	43	0.00
May 6	81	47	0.00
May 7	73	46	0.00
May 8	78	42	0.00
May 9	74	43	0.00
May 10	74	43	0.00
May 11	77	51	0.00
May 12	85	52	0.00
May 13	79	44	0.00
May 14	74	43	0.00
May 15	68	41	0.00
May 16	72	43	0.00
May 17	76	43	0.00
May 18	81	48	0.00
May 19	72	44	0.00
May 20	73	48	0.00
May 21	71	46	0.00
May 22	82	54	0.00
May 23	93	51	0.00
May 24	72	51	0.00
May 25	76	51	0.00
May 26	85	51	0.00
May 27	78	51	0.00
May 28	75	51	0.00
May 29	74	45	0.00
May 30	70	48	0.00
May 31	70	50	0.00

June 1999 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	70	51	0.00
June 2	60	51	0.00
June 3	68	46	0.23
June 4	64	44	0.00
June 5	74	49	0.00
June 6	81	46	0.00
June 7	80	46	0.00
June 8	79	44	0.00
June 9	78	44	0.00
June 10	80	46	0.00
June 11	82	49	0.00
June 12	81	49	0.00
June 13	81	50	0.00
June 14	84	54	0.00
June 15	82	55	0.00
June 16	79	51	0.00
June 17	84	53	0.00
June 18	84	55	0.00
June 19	83	51	0.00
June 20	83	54	0.00
June 21	87	55	0.00
June 22	82	56	0.00
June 23	89	53	0.00
June 24	89	53	0.00
June 25	89	53	0.00
June 26	89	50	0.00
June 27	87	53	0.00
June 28	93	58	0.00
June 29	97	58	0.00
June 30	98	61	0.00

July 1999 St. Helena Weather

Day	High (°F)	Low (°F)
July 1	103	60
July 2	103	53
July 3	80	50
July 4	85	49
July 5	85	49
July 6	91	53
July 7	85	51
July 8	92	54
July 9	94	56
July 10	88	53
July 11	94	58
July 12	102	62
July 13	104	63
July 14	92	59
July 15	82	53
July 16	77	52
July 17	79	52
July 18	n/a	51
July 19	78	53
July 20	76	54
July 21	74	56
July 22	80	49
July 23	83	52
July 24	76	53
July 25	83	53
July 26	80	53
July 27	79	53
July 28	79	53
July 29	80	50
July 30	84	46
July 31	85	49

August 1999 St. Helena Weather

Day	High (°F)	Low (°F)
August 1	83	51
August 2	84	51
August 3	86	54
August 4	86	55
August 5	82	57
August 6	75	57
August 7	74	57
August 8	n/a	n/a
August 9	79	51
August 10	81	57
August 11	68	58
August 12	74	54
August 13	82	50
August 14	81	52
August 15	82	55
August 16	86	57
August 17	88	56
August 18	83	53
August 19	80	50
August 20	89	53
August 21	83	55
August 22	93	58
August 23	99	59
August 24	89	57
August 25	93	56
August 26	100	60
August 27	96	65
August 28	88	58
August 29	90	58
August 30	82	54
August 31	80	55

September 1999 St. Helena Weather

Day	High (°F)	Low (°F)
September 1	81	48
September 2	80	51
September 3	81	50
September 4	77	49
September 5	87	50
September 6	93	53
September 7	89	54
September 8	85	55
September 9	87	55
September 10	87	55
September 11	82	56
September 12	82	55
September 13	83	55
September 14	84	52
September 15	84	50
September 16	84	51
September 17	78	50
September 18	78	51
September 19	75	51
September 20	72	55
September 21	80	51
September 22	88	51
September 23	88	52
September 24	81	55
September 25	82	53
September 26	89	55
September 27	98	57
September 28	91	n/a
September 29	90	54
September 30	96	54

October 1999 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	93	51	0.30
October 2	93	51	0.00
October 3	76	52	0.00
October 4	76	48	0.00
October 5	76	46	0.00
October 6	69	55	0.00
October 7	88	51	0.00
October 8	87	50	0.00
October 9	89	51	0.00
October 10	90	52	0.00
October 11	90	51	0.00
October 12	90	46	0.00
October 13	90	46	0.00
October 14	85	50	0.00
October 15	n/a	n/a	0.00
October 16	n/a	n/a	0.00
October 17	82	54	0.00
October 18	81	43	0.00
October 19	82	43	0.00
October 20	79	45	0.00
October 21	85	46	0.00
October 22	86	46	0.00
October 23	86	46	0.00
October 24	68	38	0.00
October 25	73	39	0.00
October 26	72	n/a	0.00
October 27	69	53	0.00
October 28	63	53	0.88
October 29	65	44	0.90
October 30	72	44	0.00
October 31	76	46	0.00

November 1999 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	80	47	0.00
November 2	79	46	0.00
November 3	71	51	0.00
November 4	76	46	0.00
November 5	75	47	0.00
November 6	69	54	0.00
November 7	64	50	0.52
November 8	64	50	0.90
November 9	61	n/a	0.00
November 10	59	50	0.10
November 11	71	51	0.02
November 12	73	48	0.00
November 13	77	46	0.00
November 14	75	48	0.00
November 15	66	54	0.20
November 16	64	49	0.30
November 17	57	44	0.02
November 18	60	37	0.00
November 19	60	37	0.77
November 20	58	53	0.24
November 21	60	42	0.00
November 22	60	37	0.00
November 23	59	38	0.00
November 24	61	36	0.00
November 25	64	38	0.00
November 26	63	44	0.00
November 27	58	49	0.00
November 28	59	46	0.00
November 29	59	50	0.00
November 30	56	49	0.59

December 1999 St. Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	n/a	n/a	n/a
December 2	n/a	n/a	n/a
December 3	n/a	n/a	n/a
December 4	n/a	n/a	n/a
December 5	n/a	n/a	n/a
December 6	n/a	n/a	n/a
December 7	n/a	n/a	n/a
December 8	n/a	n/a	n/a
December 9	n/a	n/a	n/a
December 10	n/a	n/a	n/a
December 11	n/a	n/a	n/a
December 12	n/a	n/a	n/a
December 13	n/a	n/a	n/a
December 14	n/a	n/a	n/a
December 15	n/a	n/a	n/a
December 16	n/a	n/a	n/a
December 17	n/a	n/a	n/a
December 18	n/a	n/a	n/a
December 19	n/a	n/a	n/a
December 20	n/a	n/a	n/a
December 21	n/a	n/a	n/a
December 22	n/a	n/a	n/a
December 23	n/a	n/a	n/a
December 24	n/a	n/a	n/a
December 25	n/a	n/a	n/a
December 26	n/a	n/a	n/a
December 27	n/a	n/a	n/a
December 28	n/a	n/a	n/a
December 29	n/a	n/a	n/a
December 30	n/a	n/a	n/a
December 31	n/a	n/a	n/a

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Weather Station Details

Years	Station	Coordinates
1907–2023	Saint Helena	location