Napa Weather in 1999

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

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1999 Napa Weather Extremes
Highest temperature	98 °F	August 25
Lowest temperature	25 °F	January 7
Highest daily low	66 °F	July 12
Lowest daily high	41 °F	January 10
Most daily precipitation	1.5 inches	February 6
Total annual precipitation	17.7 inches	-

What was the hottest temperature in Napa in 1999?

The highest temperature recorded in Napa, California in 1999 was 98 °F which happened on August 25.

Highest Temperatures: All-Time By Year

Highest Temperatures in Napa in 1999

Rank	Temperature	Date
1	98 °F	Aug 25
2	97 °F	Aug 22
2	97 °F	Jul 11
4	96 °F	Sep 29
5	95 °F	Sep 28
5	95 °F	Jul 12
7	93 °F	Sep 27
7	93 °F	Jun 28
9	92 °F	Oct 10
9	92 °F	Jun 30

What was the coldest temperature in Napa in 1999?

The lowest temperature recorded in Napa, California in 1999 was 25 °F which happened on Jan 7.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Napa in 1999

Rank	Temperature	Date
1	25 °F	January 7
2	27 °F	December 8
2	27 °F	February 10
2	27 °F	January 28
5	28 °F	December 23
5	28 °F	December 10
5	28 °F	December 4
5	28 °F	January 24
5	28 °F	January 6
5	28 °F	January 5

January 1999 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	59	29	0.00
January 2	56	30	0.00
January 3	52	31	0.00
January 4	47	34	0.00
January 5	46	28	0.00
January 6	45	28	0.00
January 7	43	25	0.00
January 8	54	30	0.00
January 9	42	33	0.00
January 10	41	31	0.00
January 11	50	30	0.00
January 12	53	33	0.00
January 13	51	32	0.00
January 14	54	34	0.09
January 15	58	46	0.25
January 16	59	49	0.05
January 17	56	49	0.10
January 18	57	52	0.34
January 19	59	51	0.38
January 20	55	49	0.12
January 21	56	45	0.00
January 22	56	45	0.36
January 23	53	33	0.11
January 24	54	28	0.00
January 25	55	40	0.00
January 26	52	32	0.18
January 27	62	29	0.00
January 28	57	27	0.00
January 29	54	31	0.00
January 30	53	35	0.00
January 31	56	34	0.69

February 1999 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	56	29	0.00
February 2	60	29	0.00
February 3	60	33	0.00
February 4	58	33	0.00
February 5	54	30	0.00
February 6	53	45	1.54
February 7	58	47	1.38
February 8	56	47	0.40
February 9	57	37	0.69
February 10	53	27	0.00
February 11	52	31	0.00
February 12	56	36	0.00
February 13	56	33	0.10
February 14	53	37	0.01
February 15	54	33	0.00
February 16	54	45	1.48
February 17	62	45	0.08
February 18	54	41	0.08
February 19	64	34	0.00
February 20	50	38	0.75
February 21	55	35	0.05
February 22	58	47	0.03
February 23	61	38	0.00
February 24	57	42	0.40
February 25	56	40	0.13
February 26	56	34	0.00
February 27	63	40	0.00
February 28	58	46	0.14

March 1999 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	62	41	0.01
March 2	63	36	0.12
March 3	58	41	0.01
March 4	57	32	0.00
March 5	57	32	0.00
March 6	55	37	0.00
March 7	58	33	0.00
March 8	51	43	0.44
March 9	54	35	0.06
March 10	53	34	0.00
March 11	61	34	0.00
March 12	61	34	0.00
March 13	59	35	0.00
March 14	53	44	0.24
March 15	60	42	0.01
March 16	60	42	0.00
March 17	57	45	0.00
March 18	59	41	0.00
March 19	59	47	0.31
March 20	61	45	0.00
March 21	60	41	0.01
March 22	58	39	0.07
March 23	57	46	0.03
March 24	57	49	0.50
March 25	66	49	0.05
March 26	65	43	0.00
March 27	60	34	0.00
March 28	63	32	0.00
March 29	61	34	0.00
March 30	57	33	0.16
March 31	55	34	0.00

April 1999 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	63	33	0.00
April 2	65	39	0.00
April 3	58	38	0.00
April 4	60	38	0.00
April 5	54	40	0.44
April 6	55	38	0.20
April 7	55	40	0.00
April 8	52	37	0.36
April 9	57	30	0.00
April 10	53	41	0.21
April 11	59	41	1.04
April 12	63	38	0.00
April 13	70	48	0.00
April 14	79	42	0.00
April 15	82	47	0.00
April 16	83	50	0.00
April 17	78	48	0.00
April 18	72	44	0.00
April 19	73	47	0.00
April 20	69	46	0.00
April 21	65	44	0.00
April 22	73	39	0.00
April 23	78	50	0.00
April 24	63	43	0.00
April 25	58	50	0.00
April 26	62	44	0.00
April 27	61	36	0.00
April 28	67	32	0.00
April 29	74	51	0.00
April 30	70	40	0.00

May 1999 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	67	46	0.00
May 2	64	45	0.04
May 3	61	45	0.03
May 4	65	36	0.00
May 5	74	39	0.00
May 6	70	41	0.00
May 7	72	40	0.00
May 8	69	36	0.00
May 9	69	36	0.00
May 10	71	39	0.00
May 11	78	45	0.00
May 12	71	45	0.00
May 13	68	37	0.00
May 14	65	40	0.00
May 15	69	34	0.00
May 16	70	37	0.00
May 17	73	41	0.00
May 18	68	46	0.00
May 19	65	43	0.00
May 20	65	47	0.00
May 21	73	41	0.00
May 22	73	49	0.00
May 23	70	50	0.00
May 24	71	51	0.00
May 25	72	51	0.00
May 26	66	49	0.00
May 27	64	50	0.00
May 28	66	50	0.00
May 29	63	48	0.00
May 30	69	43	0.00
May 31	69	50	0.00

June 1999 Napa Weather

Day	High (°F)	Low (°F)
June 1	62	51
June 2	65	48
June 3	67	48
June 4	66	42
June 5	70	52
June 6	76	44
June 7	73	37
June 8	73	36
June 9	71	41
June 10	74	47
June 11	74	48
June 12	74	48
June 13	79	52
June 14	77	53
June 15	74	50
June 16	73	49
June 17	73	54
June 18	75	51
June 19	73	50
June 20	77	52
June 21	75	56
June 22	78	54
June 23	72	52
June 24	76	53
June 25	76	48
June 26	79	46
June 27	88	48
June 28	93	53
June 29	90	57
June 30	92	57

July 1999 Napa Weather

Day	High (°F)	Low (°F)
July 1	79	57
July 2	73	56
July 3	74	51
July 4	81	45
July 5	86	48
July 6	77	48
July 7	87	44
July 8	87	51
July 9	81	51
July 10	82	53
July 11	97	55
July 12	95	66
July 13	81	60
July 14	71	54
July 15	69	51
July 16	74	53
July 17	70	51
July 18	69	51
July 19	70	55
July 20	69	56
July 21	74	53
July 22	75	48
July 23	74	53
July 24	76	56
July 25	71	51
July 26	70	53
July 27	73	52
July 28	72	54
July 29	78	51
July 30	76	50
July 31	75	49

August 1999 Napa Weather

Day	High (°F)	Low (°F)
August 1	80	50
August 2	84	51
August 3	78	55
August 4	74	53
August 5	73	57
August 6	73	59
August 7	75	57
August 8	76	57
August 9	74	54
August 10	66	58
August 11	74	55
August 12	77	49
August 13	76	50
August 14	77	50
August 15	79	57
August 16	77	54
August 17	76	51
August 18	75	51
August 19	83	48
August 20	76	53
August 21	89	55
August 22	97	55
August 23	78	56
August 24	83	51
August 25	98	51
August 26	n/a	n/a
August 27	78	59
August 28	80	58
August 29	76	57
August 30	81	55
August 31	80	48

September 1999 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	78	45	0.00
September 2	74	52	0.00
September 3	71	51	0.00
September 4	79	46	0.00
September 5	88	48	0.00
September 6	78	51	0.00
September 7	75	51	0.00
September 8	76	55	0.01
September 9	72	57	0.01
September 10	73	57	0.00
September 11	71	56	0.00
September 12	73	55	0.00
September 13	76	53	0.00
September 14	74	52	0.00
September 15	71	49	0.00
September 16	70	48	0.00
September 17	70	49	0.00
September 18	68	51	0.00
September 19	71	55	0.00
September 20	74	51	0.00
September 21	83	48	0.00
September 22	77	54	0.00
September 23	74	52	0.00
September 24	70	51	0.00
September 25	84	49	n/a
September 26	n/a	n/a	0.00
September 27	93	47	0.00
September 28	95	49	0.00
September 29	96	49	0.00
September 30	91	52	0.00

October 1999 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	79	46	0.00
October 2	69	50	0.00
October 3	70	50	0.00
October 4	71	47	0.00
October 5	71	49	0.00
October 6	72	48	0.00
October 7	82	46	0.01
October 8	90	47	0.00
October 9	88	45	0.00
October 10	92	49	0.00
October 11	80	47	0.00
October 12	87	42	0.00
October 13	80	47	0.00
October 14	77	50	0.00
October 15	84	44	0.00
October 16	88	49	0.00
October 17	82	42	0.00
October 18	78	39	0.00
October 19	n/a	n/a	0.00
October 20	82	42	0.00
October 21	87	43	0.00
October 22	78	42	0.00
October 23	66	41	0.00
October 24	69	39	0.00
October 25	74	38	0.00
October 26	67	47	0.00
October 27	64	55	0.45
October 28	67	46	0.01
October 29	71	39	0.00
October 30	75	41	0.00
October 31	77	41	0.00

November 1999 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	80	42	0.00
November 2	70	43	0.00
November 3	63	46	0.00
November 4	72	41	0.00
November 5	68	42	0.01
November 6	67	49	0.00
November 7	67	48	0.47
November 8	65	45	0.06
November 9	65	40	0.00
November 10	63	49	0.04
November 11	74	48	0.00
November 12	76	43	0.00
November 13	80	41	0.00
November 14	61	48	0.08
November 15	68	50	0.00
November 16	64	46	0.51
November 17	59	39	0.01
November 18	62	37	0.00
November 19	59	44	0.86
November 20	62	45	0.01
November 21	62	39	0.05
November 22	60	35	0.00
November 23	60	33	0.00
November 24	60	33	0.00
November 25	63	37	0.00
November 26	58	47	0.01
November 27	58	47	0.00
November 28	60	45	0.00
November 29	59	50	0.22
November 30	58	45	0.17

December 1999 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	59	36	0.02
December 2	60	35	0.02
December 3	64	36	0.00
December 4	58	28	0.00
December 5	58	32	0.00
December 6	59	34	0.01
December 7	60	34	0.01
December 8	55	27	0.00
December 9	54	36	0.37
December 10	59	28	0.00
December 11	61	37	0.00
December 12	57	38	0.00
December 13	55	33	0.00
December 14	59	33	0.00
December 15	57	30	0.00
December 16	60	29	0.00
December 17	63	32	0.00
December 18	57	34	0.00
December 19	78	32	0.00
December 20	67	38	0.00
December 21	71	35	0.00
December 22	68	34	0.00
December 23	63	28	0.00
December 24	63	32	0.00
December 25	63	31	0.00
December 26	61	30	0.00
December 27	67	30	0.00
December 28	64	29	0.00
December 29	62	30	0.00
December 30	61	30	0.00
December 31	55	30	0.00

Next Year >

Weather Station Details

Years	Station	Coordinates
1999–2024	Napa County Airport	location
1901–1998	Napa State Hospital	location