Average annual temperature is 16.6 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: 1.6 °C
Number of sunny days: 269 days
Number of rainy days: 96 days
Look at detailed online map of Willowbrook
* Weather data for Willowbrook 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) | 20.0 | 26.8 | 23.5 | 31.3 | 26.8 | 26.2 | 36.0 | 35.1 | 32.4 | 36.0 | 31.0 | 28.7 |
| Average daytime temperature (°C) | 16.3 | 17.9 | 16.4 | 20.8 | 21.2 | 22.9 | 29.4 | 28.0 | 26.4 | 27.4 | 24.3 | 20.9 |
| Average temperature (°C) | 11.0 | 11.1 | 11.9 | 14.8 | 16.7 | 18.3 | 22.1 | 22.0 | 21.0 | 19.6 | 16.1 | 14.3 |
| Average night temperature (°C) | 6.9 | 5.9 | 8.5 | 10.7 | 13.6 | 14.9 | 17.3 | 17.9 | 17.4 | 14.4 | 10.2 | 9.5 |
| Absolute minimum temperature (°C) | 1.9 | 1.6 | 2.6 | 5.3 | 9.8 | 11.9 | 13.7 | 15.4 | 14.1 | 8.2 | 6.9 | 6.2 |
| 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) | 6.6 | 8.5 | 7.9 | 10.2 | 9.4 | 10.0 | 12.1 | 10.7 | 9.0 | 9.7 | 8.9 | 7.2 |
| Precipitation (mm) | 225 | 95 | 191 | 3 | 12 | 1 | 0 | 64 | 68 | 2 | 34 | 106 |
| Sunny days | 16 | 18 | 12 | 26 | 22 | 26 | 30 | 25 | 21 | 28 | 23 | 22 |
| Rainy days | 15 | 10 | 19 | 4 | 9 | 4 | 1 | 6 | 9 | 3 | 7 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Willowbrook during the most sunny months:
The largest precipitation sum in Willowbrook is at