Napa Weather in 2018

2018 Napa Weather Extremes
Highest temperature	96 °F	June 23
Lowest temperature	21 °F	February 20
Highest daily low	62 °F	October 2
Lowest daily high	51 °F	March 3
Most daily precipitation	2.4 inches	April 6
Total annual precipitation	16.6 inches	-

Rank	Temperature	Date
1	96 °F	Jun 23
2	93 °F	Jul 6
3	91 °F	Jun 2
4	90 °F	Aug 4
4	90 °F	Jul 10
4	90 °F	Jul 9
7	89 °F	Oct 8
7	89 °F	Jun 22
9	87 °F	Sep 20
9	87 °F	Aug 9
9	87 °F	Jul 7
9	87 °F	May 28

Rank	Temperature	Date
1	21 °F	February 20
2	22 °F	February 24
3	27 °F	February 25
3	27 °F	February 23
3	27 °F	February 16
6	28 °F	November 18
6	28 °F	March 5
6	28 °F	February 22
6	28 °F	February 12
10	29 °F	November 11
10	29 °F	March 4
10	29 °F	February 28
10	29 °F	February 14
10	29 °F	February 11
10	29 °F	January 21
10	29 °F	January 20

January 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	64	34	0.00
January 2	60	39	0.00
January 3	57	51	0.16
January 4	65	52	0.02
January 5	60	53	0.17
January 6	58	37	0.00
January 7	52	34	0.00
January 8	57	49	2.04
January 9	62	46	0.16
January 10	57	41	0.00
January 11	59	44	0.00
January 12	56	37	0.00
January 13	56	37	0.00
January 14	55	48	0.00
January 15	57	43	0.00
January 16	58	49	0.00
January 17	58	46	0.00
January 18	57	48	0.15
January 19	56	35	0.00
January 20	58	29	0.00
January 21	55	29	0.05
January 22	56	40	0.26
January 23	59	32	0.00
January 24	58	35	0.41
January 25	57	34	0.18
January 26	54	32	0.00
January 27	62	35	0.00
January 28	64	36	0.00
January 29	60	36	0.00
January 30	65	35	0.00
January 31	67	34	0.00

February 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	71	40	0.00
February 2	72	38	0.00
February 3	73	37	0.00
February 4	75	40	0.00
February 5	74	38	0.00
February 6	80	36	0.00
February 7	73	35	0.00
February 8	75	37	0.00
February 9	74	38	0.00
February 10	73	37	0.00
February 11	59	29	0.00
February 12	63	28	0.00
February 13	63	33	0.00
February 14	61	29	0.00
February 15	68	30	0.00
February 16	65	27	0.00
February 17	69	31	0.00
February 18	58	37	0.00
February 19	53	30	0.00
February 20	52	21	0.00
February 21	55	30	0.00
February 22	52	28	0.03
February 23	57	27	0.00
February 24	58	22	0.00
February 25	60	27	0.00
February 26	57	37	0.08
February 27	60	30	0.00
February 28	56	29	0.10

March 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	59	44	1.38
March 2	51	33	0.30
March 3	51	32	0.22
March 4	56	29	0.00
March 5	64	28	0.00
March 6	67	34	0.00
March 7	67	43	0.01
March 8	67	45	0.09
March 9	65	38	0.00
March 10	59	38	0.01
March 11	70	40	0.00
March 12	71	41	0.17
March 13	61	48	0.73
March 14	56	42	0.07
March 15	56	33	0.64
March 16	56	35	0.09
March 17	55	33	0.03
March 18	58	31	0.00
March 19	64	32	0.00
March 20	56	50	0.32
March 21	62	52	0.38
March 22	61	40	0.53
March 23	60	34	0.16
March 24	57	37	0.04
March 25	61	32	0.02
March 26	69	33	0.00
March 27	74	39	0.00
March 28	76	40	0.00
March 29	80	42	0.00
March 30	77	43	0.00
March 31	70	43	0.00

April 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	71	48	0.00
April 2	70	43	0.00
April 3	68	42	0.00
April 4	67	44	0.00
April 5	61	49	0.24
April 6	62	56	2.37
April 7	66	52	0.41
April 8	67	44	0.00
April 9	76	41	0.00
April 10	64	47	0.00
April 11	61	44	0.14
April 12	60	37	0.00
April 13	71	38	0.00
April 14	73	42	0.00
April 15	64	41	0.16
April 16	57	38	0.44
April 17	62	34	0.00
April 18	60	38	0.00
April 19	68	34	0.00
April 20	73	39	0.00
April 21	n/a	n/a	0.00
April 22	n/a	n/a	0.00
April 23	79	n/a	0.00
April 24	68	48	0.00
April 25	67	43	0.00
April 26	n/a	n/a	0.00
April 27	67	49	0.00
April 28	64	43	0.00
April 29	67	45	0.00
April 30	66	40	0.00

May 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	70	40	0.00
May 2	67	50	0.00
May 3	66	49	0.00
May 4	75	45	0.00
May 5	69	46	0.00
May 6	70	48	0.00
May 7	78	42	0.00
May 8	76	48	0.00
May 9	73	54	0.00
May 10	75	46	0.00
May 11	84	45	0.00
May 12	80	53	0.00
May 13	67	53	0.00
May 14	65	52	0.00
May 15	68	53	0.00
May 16	68	46	0.00
May 17	71	41	0.00
May 18	68	47	0.00
May 19	71	47	0.00
May 20	n/a	n/a	0.00
May 21	n/a	n/a	0.00
May 22	68	53	0.00
May 23	63	54	0.00
May 24	66	54	0.00
May 25	67	54	0.01
May 26	69	51	0.00
May 27	77	45	0.00
May 28	87	49	0.00
May 29	79	51	0.00
May 30	70	51	0.00
May 31	70	48	0.00

June 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	81	42	0.00
June 2	91	48	0.00
June 3	84	53	0.00
June 4	82	47	0.00
June 5	75	46	0.00
June 6	73	47	0.00
June 7	77	46	0.00
June 8	83	43	0.00
June 9	75	48	0.00
June 10	77	39	0.00
June 11	82	46	0.00
June 12	86	51	0.00
June 13	85	50	0.00
June 14	71	55	0.00
June 15	68	54	0.00
June 16	70	53	0.00
June 17	71	55	0.00
June 18	76	52	0.00
June 19	75	52	0.00
June 20	77	50	0.00
June 21	78	45	0.00
June 22	89	49	0.00
June 23	96	53	0.00
June 24	74	53	0.00
June 25	71	57	0.00
June 26	72	52	0.00
June 27	68	50	0.00
June 28	78	48	0.00
June 29	81	51	0.00
June 30	84	50	0.00

July 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	73	52	0.00
July 2	71	55	0.00
July 3	71	56	0.00
July 4	71	53	0.00
July 5	83	45	0.00
July 6	93	57	0.00
July 7	87	51	0.00
July 8	83	50	0.00
July 9	90	51	0.00
July 10	90	55	0.00
July 11	78	57	0.00
July 12	79	53	0.00
July 13	83	60	0.00
July 14	78	57	0.00
July 15	77	54	0.00
July 16	78	52	0.00
July 17	78	54	0.00
July 18	78	56	0.00
July 19	80	52	0.00
July 20	79	50	0.00
July 21	80	58	0.00
July 22	82	59	0.00
July 23	84	57	0.00
July 24	81	54	0.00
July 25	86	53	0.00
July 26	75	50	0.00
July 27	74	52	0.00
July 28	74	53	0.00
July 29	73	54	0.00
July 30	74	51	0.00
July 31	73	56	0.00

August 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	74	56	0.00
August 2	75	48	0.00
August 3	81	50	0.00
August 4	90	49	0.00
August 5	82	56	0.00
August 6	86	51	0.00
August 7	73	53	0.00
August 8	78	56	0.00
August 9	87	52	0.00
August 10	82	49	0.00
August 11	81	59	0.00
August 12	76	59	0.00
August 13	72	55	0.00
August 14	77	56	0.00
August 15	80	56	0.00
August 16	78	53	0.00
August 17	83	54	0.00
August 18	83	47	0.00
August 19	75	51	0.00
August 20	69	55	0.00
August 21	71	56	0.00
August 22	73	57	0.00
August 23	74	57	0.00
August 24	72	55	0.00
August 25	73	50	0.00
August 26	72	51	0.00
August 27	71	56	0.00
August 28	72	55	0.00
August 29	76	48	0.00
August 30	74	56	0.00
August 31	80	50	0.00

September 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	74	49	0.00
September 2	77	49	0.00
September 3	74	54	0.00
September 4	75	54	0.00
September 5	70	53	0.00
September 6	74	53	0.00
September 7	80	48	0.00
September 8	83	46	0.00
September 9	81	49	0.00
September 10	83	47	0.00
September 11	81	46	0.00
September 12	75	46	0.00
September 13	76	48	0.00
September 14	75	45	0.00
September 15	77	50	0.00
September 16	78	39	0.00
September 17	75	52	0.00
September 18	73	51	0.00
September 19	83	45	0.00
September 20	87	44	0.00
September 21	76	47	0.00
September 22	74	44	0.00
September 23	74	45	0.00
September 24	83	42	0.00
September 25	76	46	0.00
September 26	84	43	0.00
September 27	73	45	0.00
September 28	71	53	0.00
September 29	72	49	0.00
September 30	77	55	0.00

October 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	77	53	0.00
October 2	81	62	n/a
October 3	78	59	0.00
October 4	71	52	0.00
October 5	76	45	0.00
October 6	82	49	0.00
October 7	86	61	0.00
October 8	89	55	0.00
October 9	74	51	0.00
October 10	69	48	0.00
October 11	73	46	0.00
October 12	84	43	0.00
October 13	74	42	0.00
October 14	81	43	0.00
October 15	83	43	0.00
October 16	80	38	0.00
October 17	74	39	0.00
October 18	75	39	0.00
October 19	81	43	0.00
October 20	74	42	0.00
October 21	68	41	0.00
October 22	67	43	0.00
October 23	70	37	0.00
October 24	74	42	0.00
October 25	75	47	0.00
October 26	79	50	0.00
October 27	76	50	0.00
October 28	n/a	n/a	0.00
October 29	74	42	0.00
October 30	82	39	0.00
October 31	80	43	0.00

November 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	82	47	0.00
November 2	81	44	0.00
November 3	83	42	0.00
November 4	73	41	0.00
November 5	76	41	0.00
November 6	78	34	0.00
November 7	77	37	0.00
November 8	76	41	0.00
November 9	65	31	0.00
November 10	62	31	0.00
November 11	75	29	0.00
November 12	70	33	0.00
November 13	66	35	0.00
November 14	64	31	0.00
November 15	64	31	0.00
November 16	65	32	0.00
November 17	62	31	0.00
November 18	65	28	0.00
November 19	69	31	0.00
November 20	66	31	0.00
November 21	59	48	n/a
November 22	63	49	n/a
November 23	60	51	0.65
November 24	64	46	0.00
November 25	64	43	0.00
November 26	68	39	0.00
November 27	59	43	0.30
November 28	65	56	0.58
November 29	61	51	0.38
November 30	63	42	0.00

December 2018 Napa Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	61	40	0.46
December 2	57	33	0.00
December 3	57	35	0.00
December 4	57	48	0.00
December 5	55	42	0.17
December 6	61	39	0.00
December 7	62	35	0.00
December 8	62	36	0.00
December 9	54	41	0.00
December 10	57	34	0.01
December 11	57	36	0.00
December 12	64	38	0.00
December 13	61	35	0.00
December 14	62	49	0.14
December 15	60	52	0.00
December 16	62	48	0.57
December 17	58	41	0.01
December 18	59	40	0.00
December 19	59	43	0.00
December 20	55	42	0.01
December 21	59	40	0.13
December 22	55	36	0.00
December 23	58	41	0.00
December 24	59	48	0.44
December 25	64	37	0.00
December 26	59	33	0.00
December 27	61	34	0.00
December 28	63	36	0.00
December 29	59	31	0.00
December 30	58	30	0.00
December 31	57	34	0.00