San Bernardino Weather Year-Round — Best Time to Visit
San Bernardino, United States has warm weather year-round. The best time to visit is June (score: 99/100). Annual average high: 24.8°C, total rainfall: 363mm.
When is the best time to visit San Bernardino?
99
June is the best month to visit San Bernardino with a travel score of 99/100 (Excellent).
Expect highs of 30°C, 1 rain days, and 13.7 hours of daily sunshine.
View June weather details →Travel Score by Month
78
Jan
77
Feb
83
Mar
90
Apr
96
May
99
Jun
98
Jul
98
Aug
98
Sep
97
Oct
88
Nov
79
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in San Bernardino each month?
24.8°C
Avg High
11.6°C
Avg Low
363mm
Annual Rain
How much rain does San Bernardino get?
San Bernardino receives 363mm of rain annually. The wettest month is typically February with 81mm, while June is the driest.
What is the weather like each month in San Bernardino?
January
78
17°C
Low: 5°C
6 rain days
Good
February
77
18°C
Low: 6°C
7 rain days
Good
March
83
20°C
Low: 7°C
6 rain days
Excellent
April
90
23°C
Low: 9°C
4 rain days
Excellent
May
96
26°C
Low: 12°C
2 rain days
Excellent
June
Best time to visit99
30°C
Low: 16°C
1 rain days
Excellent
July
98
34°C
Low: 20°C
2 rain days
Excellent
August
98
34°C
Low: 20°C
2 rain days
Excellent
September
98
32°C
Low: 18°C
2 rain days
Excellent
October
97
27°C
Low: 13°C
2 rain days
Excellent
November
88
22°C
Low: 8°C
3 rain days
Excellent
December
79
17°C
Low: 5°C
5 rain days
Good
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Data based on 1994–2024 averages · Last updated: 2024-12-31