Weather in San Bernardino in August
In an average August, San Bernardino sees a daily high around 89°F and a low around 66°F, based on 1980–2026 of local climate records.
| Average high | 89°F |
|---|---|
| Typical high range | 82°F to 96°F |
| Average low | 66°F |
| Typical low range | 60°F to 71°F |
| Average daily precipitation | 0.00 in |
August records
The most extreme August on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total August accumulation.
High
Highest
103°F
1981-08-27
Lowest
70°F
2000-08-31
Low
Highest
78°F
2020-08-16
Lowest
52°F
1992-08-31
Feels-like
Highest
120°F
1997-08-05
Lowest
52°F
1992-08-31
Humidity
Highest
17.6 g/m³
1983-08-16
Lowest
4.5 g/m³
2016-08-17
Wind
Highest
11 mph
2023-08-21
Lowest
4 mph
1984-08-20
Gust
Highest
41 mph
2023-08-21
Lowest
13 mph
1984-08-20
Precip
Wettest
4.17 in
1983
Driest
0.00 in
2002
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