Napa Weather Year-Round — Best Time to Visit
Napa, United States has warm weather year-round. The best time to visit is July (score: 100/100). Annual average high: 22.4°C, total rainfall: 609mm.
When is the best time to visit Napa?
100
July is the best month to visit Napa with a travel score of 100/100 (Excellent).
Expect highs of 30.4°C, 0 rain days, and 13.6 hours of daily sunshine.
View July weather details →Travel Score by Month
61
Jan
68
Feb
74
Mar
84
Apr
92
May
99
Jun
100
Jul
99
Aug
99
Sep
94
Oct
75
Nov
61
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Napa each month?
22.4°C
Avg High
10°C
Avg Low
609mm
Annual Rain
How much rain does Napa get?
Napa receives 609mm of rain annually. The wettest month is typically January with 126mm, while July is the driest.
What is the weather like each month in Napa?
January
61
15°C
Low: 5°C
9 rain days
Good
February
68
16°C
Low: 6°C
8 rain days
Good
March
74
18°C
Low: 7°C
8 rain days
Good
April
84
21°C
Low: 9°C
5 rain days
Excellent
May
92
24°C
Low: 11°C
3 rain days
Excellent
June
99
29°C
Low: 14°C
1 rain days
Excellent
July
Best time to visit100
30°C
Low: 14°C
0 rain days
Excellent
August
99
30°C
Low: 15°C
0 rain days
Excellent
September
99
29°C
Low: 14°C
1 rain days
Excellent
October
94
25°C
Low: 12°C
3 rain days
Excellent
November
75
18°C
Low: 8°C
6 rain days
Good
December
61
14°C
Low: 6°C
10 rain days
Good
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What cities are near Napa?
Data based on 1994–2024 averages · Last updated: 2024-12-31