Walnut Creek Weather Year-Round — Best Time to Visit
Walnut Creek, United States has mild weather year-round. The best time to visit is September (score: 97/100). Annual average high: 21.3°C, total rainfall: 470mm.
When is the best time to visit Walnut Creek?
97
September is the best month to visit Walnut Creek with a travel score of 97/100 (Excellent).
Expect highs of 27.8°C, 1 rain days, and 11.7 hours of daily sunshine.
View September weather details →Travel Score by Month
62
Jan
68
Feb
74
Mar
83
Apr
89
May
96
Jun
97
Jul
97
Aug
97
Sep
93
Oct
76
Nov
62
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Walnut Creek each month?
21.3°C
Avg High
10.3°C
Avg Low
470mm
Annual Rain
How much rain does Walnut Creek get?
Walnut Creek receives 470mm of rain annually. The wettest month is typically December with 94mm, while July is the driest.
What is the weather like each month in Walnut Creek?
January
62
14°C
Low: 6°C
9 rain days
Good
February
68
15°C
Low: 7°C
8 rain days
Good
March
74
17°C
Low: 8°C
8 rain days
Good
April
83
20°C
Low: 9°C
5 rain days
Excellent
May
89
23°C
Low: 11°C
3 rain days
Excellent
June
96
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: 15°C
0 rain days
Excellent
September
Best time to visit97
28°C
Low: 14°C
1 rain days
Excellent
October
93
24°C
Low: 12°C
3 rain days
Excellent
November
76
18°C
Low: 9°C
6 rain days
Good
December
62
14°C
Low: 6°C
9 rain days
Good
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Data based on 1994–2024 averages · Last updated: 2024-12-31