Vallejo Weather Year-Round — Best Time to Visit
Vallejo, United States has mild weather year-round. The best time to visit is September (score: 97/100). Annual average high: 21.2°C, total rainfall: 528mm.
When is the best time to visit Vallejo?
97
September is the best month to visit Vallejo with a travel score of 97/100 (Excellent).
Expect highs of 27.6°C, 1 rain days, and 11.7 hours of daily sunshine.
View September weather details →Travel Score by Month
61
Jan
67
Feb
73
Mar
82
Apr
90
May
97
Jun
97
Jul
97
Aug
97
Sep
91
Oct
74
Nov
61
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Vallejo each month?
21.2°C
Avg High
9.8°C
Avg Low
528mm
Annual Rain
How much rain does Vallejo get?
Vallejo receives 528mm of rain annually. The wettest month is typically January with 105mm, while July is the driest.
What is the weather like each month in Vallejo?
January
61
14°C
Low: 6°C
9 rain days
Good
February
67
15°C
Low: 6°C
8 rain days
Good
March
73
17°C
Low: 7°C
8 rain days
Good
April
82
20°C
Low: 9°C
5 rain days
Excellent
May
90
23°C
Low: 11°C
3 rain days
Excellent
June
97
27°C
Low: 13°C
1 rain days
Excellent
July
97
28°C
Low: 14°C
0 rain days
Excellent
August
97
28°C
Low: 14°C
0 rain days
Excellent
September
Best time to visit97
28°C
Low: 14°C
1 rain days
Excellent
October
91
24°C
Low: 12°C
3 rain days
Excellent
November
74
18°C
Low: 8°C
6 rain days
Good
December
61
14°C
Low: 6°C
9 rain days
Good
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Data based on 1994–2024 averages · Last updated: 2024-12-31