Average annual temperature is 17.1 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: -5.2 °C
Number of sunny days: 178 days
Number of rainy days: 187 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) | 22.2 | 25.9 | 25.3 | 28.1 | 31.6 | 35.9 | 35.7 | 36.3 | 31.9 | 30.0 | 26.5 | 20.9 |
| Average daytime temperature (°C) | 13.8 | 17.0 | 17.9 | 21.2 | 26.5 | 30.6 | 32.5 | 31.7 | 29.2 | 23.8 | 18.3 | 13.8 |
| Average temperature (°C) | 8.9 | 11.0 | 12.1 | 15.3 | 20.2 | 24.0 | 26.3 | 25.9 | 23.0 | 18.0 | 12.1 | 8.2 |
| Average night temperature (°C) | 5.0 | 6.7 | 7.2 | 10.1 | 14.9 | 18.2 | 21.3 | 21.2 | 17.9 | 13.0 | 7.2 | 4.0 |
| Absolute minimum temperature (°C) | -4.4 | -4.4 | -5.2 | 4.6 | 6.0 | 14.7 | 16.3 | 16.7 | 12.3 | 4.2 | -2.8 | -3.4 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 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) | 5.3 | 6.4 | 8.3 | 9.0 | 11.0 | 11.6 | 10.8 | 10.1 | 10.5 | 8.4 | 7.1 | 7.1 |
| Precipitation (mm) | 152 | 171 | 141 | 129 | 78 | 127 | 105 | 158 | 22 | 13 | 56 | 133 |
| Sunny days | 12 | 11 | 18 | 16 | 10 | 13 | 6 | 11 | 16 | 22 | 21 | 22 |
| Rainy days | 19 | 17 | 13 | 14 | 21 | 17 | 25 | 20 | 14 | 9 | 9 | 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