Click on a day for an hourly weather forecast
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.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 18° / 5° | 2 | 29 | 0 | 50 mm | Good | San Bernardino in January |
| February | 18° / 5° | 2 | 26 | 0 | 55 mm | Good | San Bernardino in February |
| March | 20° / 5° | 2 | 29 | 0 | 31 mm | Good | San Bernardino in March |
| April | 23° / 7° | 1 | 29 | 0 | 23 mm | Perfect | San Bernardino in April |
| May | 26° / 9° | 0 | 31 | 0 | 7 mm | Perfect | San Bernardino in May |
| June | 31° / 12° | 0 | 30 | 0 | 2 mm | Good | San Bernardino in June |
| July | 34° / 15° | 1 | 30 | 0 | 18 mm | Ok | San Bernardino in July |
| August | 34° / 16° | 0 | 31 | 0 | 10 mm | Ok | San Bernardino in August |
| September | 32° / 14° | 0 | 30 | 0 | 7 mm | Good | San Bernardino in September |
| October | 27° / 10° | 0 | 31 | 0 | 8 mm | Perfect | San Bernardino in October |
| November | 22° / 7° | 1 | 29 | 0 | 18 mm | Good | San Bernardino in November |
| December | 17° / 4° | 3 | 28 | 0 | 63 mm | Good | San Bernardino in December |