Average annual temperature is 19.9 °C
Absolute maximum temperature: 38.1 °C
Absolute minimum temperature: -1.9 °C
Number of sunny days: 173 days
Number of rainy days: 192 days
Look at detailed online map of Wheaton
* Weather data for Wheaton 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) | 25.7 | 30.2 | 31.7 | 33.6 | 31.8 | 34.9 | 38.1 | 35.7 | 33.0 | 28.6 | 27.1 | 24.2 |
| Average daytime temperature (°C) | 19.5 | 22.7 | 24.7 | 26.6 | 27.7 | 31.5 | 34.5 | 33.1 | 29.6 | 24.8 | 20.0 | 16.6 |
| Average temperature (°C) | 12.8 | 16.4 | 17.7 | 19.7 | 21.7 | 25.4 | 28.3 | 27.6 | 23.9 | 19.0 | 14.3 | 11.6 |
| Average night temperature (°C) | 7.7 | 11.7 | 11.7 | 14.2 | 16.8 | 20.6 | 23.5 | 23.1 | 19.4 | 14.3 | 10.1 | 7.8 |
| Absolute minimum temperature (°C) | -1.9 | 1.2 | 0.5 | 8.0 | 10.1 | 16.6 | 21.2 | 21.0 | 15.4 | 8.2 | 0.1 | -0.2 |
| 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) | 10.3 | 11.1 | 12.0 | 13.0 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.6 | 10.1 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.2 | 8.5 | 8.7 | 9.6 | 10.3 | 10.8 | 11.6 | 11.4 | 9.9 | 8.9 | 6.8 | 6.3 |
| Precipitation (mm) | 88 | 120 | 70 | 126 | 107 | 144 | 91 | 174 | 94 | 47 | 54 | 139 |
| Sunny days | 17 | 15 | 17 | 11 | 10 | 8 | 9 | 7 | 16 | 23 | 18 | 22 |
| Rainy days | 14 | 13 | 14 | 19 | 21 | 22 | 22 | 24 | 14 | 8 | 12 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Wheaton during the most sunny months:
The largest precipitation sum in Wheaton is at