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 about 3 to 8 days of rain in San Bernardino during the month of July. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in San Bernardino in July 2023.
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.