The weather in San Bernardino in July is hot. The average temperatures are between 15°C and 34°C. Usually the days in July are hot while the nights are a bit cooler.
You can expect up to 3 rainy days in San Bernardino during the month of July.
Our weather forecast can give you a great sense of what weather to expect in San Bernardino in July 2025.
If you’re planning to visit San Bernardino in the near future, we highly recommend that you review the 14 day weather forecast for San Bernardino before you arrive.
Temperatures
34° / 15°
Rainy Days
1
Snowy Days
0
Dry Days
30
Rainfall
18
mm
Sun Hours
12.0
Hrs
