Average annual temperature is 17.0 °C
Absolute maximum temperature: 39.4 °C
Absolute minimum temperature: 0.1 °C
Number of sunny days: 251 days
Number of rainy days: 114 days
Look at detailed online map of San Dimas
* Weather data for San Dimas United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 19.5 | 24.3 | 21.1 | 30.4 | 28.7 | 33.9 | 38.8 | 39.4 | 35.7 | 34.3 | 28.8 | 25.2 |
| Average daytime temperature (°C) | 14.9 | 16.0 | 15.7 | 22.9 | 22.3 | 25.2 | 34.5 | 33.1 | 28.3 | 27.6 | 23.1 | 19.5 |
| Average temperature (°C) | 10.4 | 9.8 | 10.8 | 15.3 | 15.9 | 18.0 | 26.0 | 25.5 | 21.7 | 20.3 | 16.2 | 14.0 |
| Average night temperature (°C) | 6.7 | 5.1 | 7.0 | 10.2 | 11.9 | 13.4 | 19.5 | 20.2 | 17.2 | 15.1 | 11.0 | 9.7 |
| Absolute minimum temperature (°C) | 2.0 | 0.1 | 0.9 | 3.4 | 7.7 | 11.1 | 13.6 | 16.3 | 13.7 | 9.5 | 5.1 | 4.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.3 | 8.1 | 7.3 | 11.2 | 10.9 | 12.0 | 13.1 | 11.5 | 10.4 | 10.2 | 9.0 | 7.8 |
| Precipitation (mm) | 417 | 210 | 358 | 29 | 71 | 9 | 0 | 117 | 121 | 21 | 43 | 90 |
| Sunny days | 15 | 15 | 11 | 22 | 16 | 22 | 31 | 26 | 23 | 27 | 21 | 22 |
| Rainy days | 16 | 13 | 20 | 8 | 15 | 8 | 0 | 5 | 7 | 4 | 9 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit San Dimas during the most sunny months:
The largest precipitation sum in San Dimas is at