Average annual temperature is 9.7 °C
Absolute maximum temperature: 31.2 °C
Absolute minimum temperature: -25.1 °C
Number of sunny days: 107 days
Number of rainy days: 234 days
Number of snow days: 24 days
Look at detailed online map of Willow Glen
* Weather data for Willow Glen 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) | 13.7 | 16.1 | 15.1 | 27.0 | 29.6 | 31.2 | 31.2 | 27.7 | 30.5 | 27.5 | 14.5 | 13.0 |
| Average daytime temperature (°C) | 3.6 | 5.6 | 5.7 | 16.4 | 19.5 | 23.2 | 26.8 | 23.8 | 21.9 | 15.9 | 7.6 | 6.1 |
| Average temperature (°C) | 0.4 | -0.5 | 0.8 | 9.5 | 12.7 | 17.7 | 21.5 | 19.0 | 16.8 | 11.7 | 3.2 | 2.7 |
| Average night temperature (°C) | -2.3 | -5.1 | -3.0 | 4.2 | 6.4 | 13.0 | 17.2 | 15.3 | 12.9 | 8.4 | 0.1 | 0.4 |
| Absolute minimum temperature (°C) | -8.6 | -25.1 | -10.5 | -5.1 | -1.3 | 6.8 | 13.3 | 10.0 | 6.9 | 1.0 | -6.1 | -6.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.4 | 5.1 | 5.4 | 8.7 | 12.0 | 11.1 | 11.4 | 10.1 | 9.0 | 6.2 | 5.7 | 3.3 |
| Precipitation (mm) | 109 | 70 | 108 | 121 | 48 | 138 | 146 | 181 | 69 | 96 | 75 | 135 |
| Sunny days | 5 | 5 | 6 | 12 | 18 | 9 | 4 | 6 | 15 | 10 | 9 | 8 |
| Rainy days | 19 | 17 | 20 | 18 | 13 | 21 | 27 | 25 | 15 | 21 | 19 | 19 |
| Snow days | 7 | 6 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 |
The best time to visit Willow Glen during the most sunny months:
The largest precipitation sum in Willow Glen is at