Average annual temperature is 15.3 °C
Absolute maximum temperature: 37.2 °C
Absolute minimum temperature: -8.2 °C
Number of sunny days: 200 days
Number of rainy days: 164 days
Number of snow days: 1 day
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) | 19.5 | 25.1 | 27.3 | 31.2 | 30.5 | 32.6 | 37.2 | 35.9 | 36.4 | 28.7 | 26.8 | 20.2 |
| Average daytime temperature (°C) | 11.7 | 14.5 | 15.6 | 23.3 | 23.6 | 28.4 | 32.5 | 30.7 | 27.2 | 22.0 | 14.6 | 12.1 |
| Average temperature (°C) | 6.8 | 8.5 | 9.2 | 16.1 | 17.4 | 21.9 | 26.0 | 24.7 | 21.5 | 15.8 | 8.6 | 6.5 |
| Average night temperature (°C) | 3.0 | 3.8 | 3.9 | 9.9 | 12.1 | 16.4 | 21.0 | 20.0 | 17.0 | 11.0 | 4.0 | 2.4 |
| Absolute minimum temperature (°C) | -3.3 | -8.2 | -4.3 | 1.7 | 5.8 | 11.9 | 17.9 | 16.0 | 10.8 | 5.3 | -5.7 | -3.8 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.6 | 7.0 | 7.9 | 9.6 | 10.5 | 10.7 | 11.7 | 10.8 | 8.6 | 8.8 | 7.9 | 6.0 |
| Precipitation (mm) | 90 | 75 | 51 | 97 | 61 | 95 | 105 | 41 | 127 | 40 | 42 | 164 |
| Sunny days | 14 | 17 | 14 | 20 | 15 | 13 | 11 | 15 | 17 | 21 | 24 | 19 |
| Rainy days | 17 | 10 | 17 | 10 | 16 | 17 | 20 | 16 | 13 | 10 | 6 | 12 |
| Snow days | 0 | 1 | 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