Simi Valley Weather Year-Round — Best Time to Visit
Simi Valley, United States has warm weather year-round. The best time to visit is August (score: 100/100). Annual average high: 23.8°C, total rainfall: 376mm.
When is the best time to visit Simi Valley?
100
August is the best month to visit Simi Valley with a travel score of 100/100 (Excellent).
Expect highs of 31.2°C, 0 rain days, and 12.8 hours of daily sunshine.
View August weather details →Travel Score by Month
79
Jan
79
Feb
83
Mar
90
Apr
94
May
98
Jun
100
Jul
100
Aug
99
Sep
98
Oct
90
Nov
80
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Simi Valley each month?
23.8°C
Avg High
12.3°C
Avg Low
376mm
Annual Rain
How much rain does Simi Valley get?
Simi Valley receives 376mm of rain annually. The wettest month is typically February with 88mm, while June is the driest.
What is the weather like each month in Simi Valley?
January
79
18°C
Low: 7°C
5 rain days
Good
February
79
18°C
Low: 7°C
6 rain days
Good
March
83
20°C
Low: 8°C
5 rain days
Excellent
April
90
22°C
Low: 10°C
3 rain days
Excellent
May
94
24°C
Low: 13°C
2 rain days
Excellent
June
98
27°C
Low: 16°C
1 rain days
Excellent
July
100
30°C
Low: 19°C
0 rain days
Excellent
August
Best time to visit100
31°C
Low: 20°C
0 rain days
Excellent
September
99
30°C
Low: 18°C
1 rain days
Excellent
October
98
26°C
Low: 14°C
2 rain days
Excellent
November
90
22°C
Low: 10°C
3 rain days
Excellent
December
80
18°C
Low: 7°C
5 rain days
Good
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Data based on 1994–2024 averages · Last updated: 2024-12-31