Napa Weather in 1998

Historical record of Napa, California weather for the year 1998 based on NOAA data.

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1998 Napa Weather Extremes
Highest temperature	106 °F	August 4
Lowest temperature	22 °F	December 22
Highest daily low	68 °F	September 6
Lowest daily high	45 °F	December 21
Most daily precipitation	2.8 inches	February 3
Most daily snow	none	-
Total annual precipitation	36.9 inches	-
Total annual snow	none	-

What was the hottest temperature in Napa in 1998?

The highest temperature recorded in Napa, California in 1998 was 106 °F which happened on August 4.

Highest Temperatures: All-Time By Year

Highest Temperatures in Napa in 1998

Rank	Temperature	Date
1	106 °F	Aug 4
2	105 °F	Aug 3
3	103 °F	Aug 5
4	101 °F	Jul 19
4	101 °F	Jul 18
6	100 °F	Aug 2
6	100 °F	Jul 16
6	100 °F	Jul 15
9	98 °F	Aug 13
9	98 °F	Aug 12
9	98 °F	Aug 11

What was the coldest temperature in Napa in 1998?

The lowest temperature recorded in Napa, California in 1998 was 22 °F which happened on Dec 22.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Napa in 1998

Rank	Temperature	Date
1	22 °F	December 22
2	23 °F	December 24
2	23 °F	December 23
4	25 °F	December 21
5	28 °F	December 25
5	28 °F	January 5
7	29 °F	December 7
8	30 °F	December 5
9	31 °F	December 20
9	31 °F	December 19
9	31 °F	December 6

January 1998 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	61	35	0.00
January 2	62	55	0.58
January 3	62	48	0.16
January 4	58	47	0.92
January 5	53	28	0.05
January 6	52	33	0.05
January 7	52	42	0.14
January 8	53	39	0.00
January 9	53	48	0.03
January 10	59	43	0.23
January 11	58	51	0.85
January 12	58	50	1.41
January 13	58	40	0.00
January 14	55	50	0.67
January 15	59	51	0.73
January 16	59	51	0.15
January 17	62	51	0.18
January 18	62	46	1.10
January 19	53	41	0.15
January 20	53	37	0.01
January 21	53	32	0.00
January 22	58	32	0.00
January 23	57	42	0.04
January 24	60	49	0.02
January 25	59	43	0.00
January 26	62	48	0.05
January 27	62	48	0.34
January 28	58	49	0.00
January 29	62	50	0.75
January 30	60	38	0.00
January 31	60	49	0.12

February 1998 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	60	47	1.12
February 2	60	47	1.05
February 3	59	50	2.82
February 4	60	47	0.04
February 5	56	47	0.75
February 6	58	47	1.00
February 7	57	50	1.06
February 8	56	41	0.24
February 9	57	36	0.01
February 10	56	41	0.18
February 11	60	44	0.04
February 12	60	44	0.36
February 13	61	51	0.08
February 14	59	49	1.10
February 15	61	40	0.02
February 16	60	38	0.72
February 17	56	39	0.12
February 18	60	39	0.05
February 19	58	45	1.16
February 20	52	35	0.10
February 21	54	49	1.33
February 22	57	42	0.02
February 23	56	42	0.78
February 24	62	37	0.00
February 25	62	43	0.00
February 26	61	41	0.00
February 27	65	40	0.00
February 28	64	42	0.00

March 1998 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	63	42	0.00
March 2	62	42	0.00
March 3	62	39	0.00
March 4	62	35	0.00
March 5	60	38	0.18
March 6	62	33	0.14
March 7	61	34	0.05
March 8	63	34	0.12
March 9	67	37	0.00
March 10	71	42	0.00
March 11	73	46	0.00
March 12	74	49	0.08
March 13	73	48	0.22
March 14	71	43	0.00
March 15	71	43	0.00
March 16	71	52	0.00
March 17	70	48	0.00
March 18	73	44	0.00
March 19	74	44	0.00
March 20	67	54	0.00
March 21	62	55	0.12
March 22	69	55	0.03
March 23	68	54	0.63
March 24	69	48	0.22
March 25	65	48	0.22
March 26	66	43	0.00
March 27	60	48	0.00
March 28	60	35	0.06
March 29	65	34	0.11
March 30	66	36	0.00
March 31	53	44	0.50

April 1998 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	62	45	0.03
April 2	62	48	0.00
April 3	58	47	0.42
April 4	60	46	0.45
April 5	63	41	0.02
April 6	60	46	0.02
April 7	62	40	0.01
April 8	62	38	0.00
April 9	63	38	0.02
April 10	64	50	0.00
April 11	62	47	0.00
April 12	63	36	0.00
April 13	59	43	0.32
April 14	59	35	0.02
April 15	64	35	0.04
April 16	70	38	0.00
April 17	70	39	0.00
April 18	71	39	0.00
April 19	74	39	0.00
April 20	77	47	0.00
April 21	85	47	0.00
April 22	86	57	0.00
April 23	69	55	0.17
April 24	69	49	0.03
April 25	75	43	0.00
April 26	80	47	0.00
April 27	85	48	0.00
April 28	84	51	0.00
April 29	85	52	0.00
April 30	82	52	0.00

May 1998 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	70	57	0.12
May 2	70	53	0.09
May 3	73	55	0.01
May 4	71	55	0.06
May 5	70	50	0.03
May 6	61	55	0.09
May 7	68	54	0.00
May 8	68	52	0.00
May 9	66	42	0.00
May 10	69	44	0.13
May 11	68	46	0.13
May 12	59	49	0.49
May 13	66	47	0.00
May 14	65	49	0.00
May 15	68	44	0.00
May 16	66	49	0.00
May 17	70	40	0.00
May 18	75	42	0.00
May 19	73	44	0.00
May 20	69	42	0.00
May 21	71	43	0.00
May 22	74	45	0.00
May 23	74	54	0.00
May 24	70	52	0.00
May 25	66	52	0.00
May 26	64	41	0.00
May 27	62	49	0.40
May 28	57	52	0.80
May 29	61	52	0.64
May 30	74	47	0.00
May 31	75	47	0.00

June 1998 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	74	53	0.00
June 2	72	53	0.00
June 3	66	57	0.00
June 4	72	47	0.00
June 5	76	50	0.00
June 6	76	54	0.00
June 7	64	57	0.15
June 8	75	57	0.00
June 9	75	55	0.00
June 10	75	56	0.00
June 11	72	52	0.00
June 12	75	52	0.00
June 13	75	57	0.00
June 14	85	55	0.00
June 15	90	58	0.00
June 16	90	57	0.00
June 17	86	67	0.00
June 18	81	53	0.00
June 19	80	55	0.00
June 20	80	52	0.00
June 21	73	55	0.00
June 22	71	56	0.00
June 23	71	54	0.00
June 24	71	54	0.00
June 25	73	56	0.00
June 26	79	47	0.00
June 27	87	47	0.00
June 28	86	54	0.00
June 29	72	53	0.00
June 30	74	52	0.00

July 1998 Napa Weather

Day	High (°F)	Low (°F)
July 1	78	51
July 2	79	52
July 3	75	56
July 4	76	56
July 5	77	56
July 6	84	57
July 7	89	55
July 8	87	54
July 9	76	52
July 10	75	55
July 11	80	51
July 12	88	56
July 13	88	56
July 14	84	54
July 15	100	57
July 16	100	61
July 17	85	58
July 18	101	57
July 19	101	64
July 20	88	56
July 21	74	55
July 22	74	55
July 23	74	55
July 24	74	56
July 25	82	56
July 26	84	56
July 27	83	54
July 28	83	53
July 29	79	58
July 30	76	59
July 31	82	54

August 1998 Napa Weather

Day	High (°F)	Low (°F)
August 1	91	58
August 2	100	59
August 3	105	60
August 4	106	64
August 5	103	62
August 6	80	59
August 7	76	56
August 8	75	57
August 9	79	56
August 10	97	55
August 11	98	55
August 12	98	63
August 13	98	62
August 14	86	58
August 15	73	56
August 16	76	58
August 17	76	53
August 18	76	55
August 19	74	57
August 20	75	56
August 21	84	52
August 22	88	52
August 23	87	52
August 24	88	52
August 25	85	56
August 26	81	55
August 27	91	52
August 28	92	54
August 29	89	54
August 30	89	56
August 31	95	53

September 1998 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	95	57	0.00
September 2	93	57	0.00
September 3	92	57	0.00
September 4	80	63	0.00
September 5	91	65	0.00
September 6	93	68	0.00
September 7	96	67	0.00
September 8	96	60	0.00
September 9	71	54	0.00
September 10	83	52	0.00
September 11	88	52	0.00
September 12	92	58	0.00
September 13	91	59	0.00
September 14	89	60	0.00
September 15	89	56	0.00
September 16	78	54	0.00
September 17	81	51	0.00
September 18	82	50	0.00
September 19	84	51	0.00
September 20	82	53	0.00
September 21	75	57	0.00
September 22	73	54	0.00
September 23	71	51	0.00
September 24	72	53	0.00
September 25	72	55	0.00
September 26	67	55	0.00
September 27	67	52	0.09
September 28	76	54	0.04
September 29	62	54	0.02
September 30	68	55	0.00

October 1998 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	61	56	0.00
October 2	71	46	0.00
October 3	73	42	0.00
October 4	78	44	0.00
October 5	83	44	0.00
October 6	84	50	0.00
October 7	84	46	0.00
October 8	75	56	0.04
October 9	75	45	0.00
October 10	75	44	0.00
October 11	76	42	0.00
October 12	75	45	0.00
October 13	75	59	0.00
October 14	74	47	0.00
October 15	77	44	0.00
October 16	77	56	0.00
October 17	79	47	0.00
October 18	77	42	0.00
October 19	86	42	0.00
October 20	87	47	0.00
October 21	87	48	0.00
October 22	85	46	0.00
October 23	69	42	0.00
October 24	70	42	0.68
October 25	74	44	0.00
October 26	74	47	0.00
October 27	74	49	0.00
October 28	66	55	0.00
October 29	70	45	0.00
October 30	74	40	0.00
October 31	69	40	0.04

November 1998 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	66	52	0.02
November 2	66	43	0.00
November 3	63	45	0.00
November 4	64	45	0.00
November 5	68	41	0.00
November 6	66	41	0.05
November 7	60	51	0.92
November 8	58	41	0.16
November 9	59	35	0.02
November 10	58	46	0.01
November 11	59	47	0.12
November 12	63	37	0.00
November 13	64	39	0.00
November 14	62	38	0.00
November 15	61	46	0.00
November 16	61	47	0.01
November 17	62	48	0.26
November 18	62	39	0.00
November 19	63	36	0.00
November 20	62	35	0.00
November 21	63	53	0.00
November 22	63	47	0.13
November 23	61	54	0.67
November 24	58	48	0.13
November 25	62	43	0.00
November 26	63	42	0.22
November 27	57	50	0.03
November 28	59	43	0.03
November 29	55	47	0.55
November 30	61	53	1.43

December 1998 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	59	38	0.01
December 2	58	47	0.01
December 3	57	51	0.33
December 4	53	33	0.00
December 5	51	30	0.00
December 6	53	31	0.40
December 7	53	29	0.00
December 8	53	44	0.16
December 9	63	39	0.00
December 10	63	33	0.00
December 11	55	35	0.00
December 12	59	35	0.00
December 13	59	45	0.09
December 14	60	40	0.02
December 15	64	37	0.00
December 16	66	43	0.00
December 17	65	39	0.00
December 18	63	35	0.00
December 19	63	31	0.00
December 20	50	31	0.00
December 21	45	25	0.00
December 22	49	22	0.00
December 23	47	23	0.00
December 24	47	23	0.00
December 25	52	28	0.00
December 26	53	32	0.00
December 27	53	34	0.00
December 28	56	34	0.00
December 29	59	34	0.00
December 30	59	35	0.00
December 31	62	46	0.00

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Weather Station Details

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