Average annual temperature is 27.0 °C
Absolute maximum temperature: 39.8 °C
Absolute minimum temperature: 13.5 °C
Number of sunny days: 139 days
Number of rainy days: 226 days
Look at detailed online map of San Bernardino California
* Weather data for San Bernardino California Mexico is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 32.5 | 33.2 | 35.5 | 38.6 | 39.0 | 39.8 | 37.8 | 38.4 | 36.5 | 36.8 | 34.3 | 32.9 |
| Average daytime temperature (°C) | 29.6 | 30.6 | 33.0 | 35.1 | 35.5 | 36.3 | 35.3 | 34.9 | 34.8 | 33.5 | 30.5 | 28.2 |
| Average temperature (°C) | 24.1 | 24.9 | 26.4 | 27.8 | 28.5 | 29.6 | 29.1 | 28.7 | 28.3 | 27.6 | 25.6 | 23.5 |
| Average night temperature (°C) | 20.1 | 20.5 | 21.3 | 22.3 | 23.2 | 24.6 | 25.0 | 24.9 | 24.1 | 23.4 | 22.4 | 20.5 |
| Absolute minimum temperature (°C) | 15.0 | 16.1 | 18.2 | 19.1 | 18.2 | 22.0 | 23.8 | 23.5 | 22.3 | 18.6 | 19.5 | 13.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.5 | 12.0 | 12.6 | 13.1 | 13.4 | 13.3 | 12.8 | 12.3 | 11.7 | 11.1 | 10.9 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.3 | 10.0 | 10.5 | 11.5 | 11.5 | 11.7 | 10.9 | 11.0 | 11.0 | 10.5 | 9.4 | 9.2 |
| Precipitation (mm) | 35 | 20 | 35 | 21 | 55 | 56 | 97 | 99 | 86 | 47 | 44 | 49 |
| Sunny days | 16 | 13 | 25 | 19 | 13 | 11 | 6 | 1 | 2 | 10 | 10 | 13 |
| Rainy days | 15 | 15 | 6 | 11 | 18 | 19 | 25 | 30 | 28 | 21 | 20 | 18 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Bernardino California is at