Average annual temperature is 11.0 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: -22.8 °C
Number of sunny days: 179 days
Number of rainy days: 170 days
Number of snow days: 16 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) | 10.4 | 14.4 | 20.2 | 25.4 | 31.1 | 32.6 | 34.0 | 36.9 | 33.9 | 27.6 | 19.5 | 14.5 |
| Average daytime temperature (°C) | 2.9 | 5.3 | 7.8 | 16.2 | 22.2 | 27.7 | 28.4 | 27.7 | 24.3 | 16.6 | 9.4 | 6.3 |
| Average temperature (°C) | -0.9 | -0.2 | 2.6 | 9.5 | 15.5 | 20.8 | 22.7 | 22.2 | 19.2 | 12.3 | 4.6 | 2.9 |
| Average night temperature (°C) | -3.7 | -4.3 | -1.2 | 3.6 | 9.8 | 15.0 | 17.8 | 17.6 | 15.2 | 8.8 | 0.8 | 0.4 |
| Absolute minimum temperature (°C) | -22.8 | -20.8 | -11.8 | -3.1 | 1.0 | 7.7 | 14.0 | 11.8 | 9.4 | -3.3 | -10.9 | -8.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 13.0 | 14.0 | 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 | 13.8 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.4 | 7.7 | 6.4 | 9.3 | 10.7 | 11.9 | 11.6 | 10.6 | 8.2 | 6.5 | 7.2 | 4.0 |
| Precipitation (mm) | 58 | 90 | 84 | 92 | 56 | 39 | 223 | 103 | 129 | 96 | 38 | 75 |
| Sunny days | 12 | 17 | 11 | 14 | 20 | 19 | 11 | 15 | 12 | 11 | 22 | 15 |
| Rainy days | 10 | 9 | 18 | 16 | 11 | 11 | 20 | 16 | 18 | 19 | 7 | 15 |
| Snow days | 9 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
The best time to visit Wheaton during the most sunny months:
The largest precipitation sum in Wheaton is at