Average annual temperature is 7.8 °C
Absolute maximum temperature: 28.5 °C
Absolute minimum temperature: -9.7 °C
Number of sunny days: 257 days
Number of rainy days: 108 days
Look at detailed online map of Mount Wilson
* Weather data for Mount Wilson 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) | 10.3 | 14.1 | 11.1 | 20.6 | 19.2 | 24.8 | 28.4 | 28.5 | 25.0 | 23.9 | 18.1 | 16.2 |
| Average daytime temperature (°C) | 5.4 | 6.3 | 6.1 | 13.3 | 12.9 | 15.1 | 24.7 | 22.7 | 17.7 | 17.6 | 12.6 | 9.9 |
| Average temperature (°C) | 0.9 | 0.4 | 0.9 | 6.3 | 7.0 | 8.8 | 17.9 | 16.5 | 12.0 | 11.0 | 6.6 | 4.5 |
| Average night temperature (°C) | -2.7 | -3.8 | -2.9 | 0.9 | 2.7 | 4.0 | 12.0 | 11.4 | 7.9 | 6.2 | 2.0 | 0.6 |
| Absolute minimum temperature (°C) | -7.9 | -9.7 | -8.3 | -6.9 | -2.3 | 0.5 | 5.3 | 6.7 | 3.6 | -0.8 | -4.3 | -5.2 |
| 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 | 8.2 | 7.6 | 11.4 | 11.5 | 12.0 | 13.1 | 11.8 | 10.6 | 10.3 | 9.0 | 7.7 |
| Precipitation (mm) | 436 | 221 | 307 | 23 | 50 | 18 | 0 | 113 | 86 | 10 | 38 | 76 |
| Sunny days | 15 | 16 | 8 | 25 | 17 | 23 | 30 | 28 | 23 | 27 | 22 | 23 |
| Rainy days | 16 | 12 | 23 | 5 | 14 | 7 | 1 | 3 | 7 | 4 | 8 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Mount Wilson during the most sunny months:
The largest precipitation sum in Mount Wilson is at