Average annual temperature is 8.2 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -28.6 °C
Number of sunny days: 207 days
Number of rainy days: 123 days
Number of snow days: 35 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) | 1.9 | 4.7 | 3.3 | 24.8 | 34.5 | 34.8 | 35.2 | 34.7 | 35.1 | 31.3 | 16.0 | 10.5 |
| Average daytime temperature (°C) | -5.1 | -2.5 | -1.5 | 8.8 | 24.5 | 30.0 | 27.5 | 27.9 | 24.7 | 14.6 | 7.5 | 3.9 |
| Average temperature (°C) | -8.6 | -8.3 | -6.0 | 3.2 | 17.7 | 24.1 | 21.9 | 22.3 | 19.4 | 10.0 | 2.3 | -0.1 |
| Average night temperature (°C) | -11.5 | -13.0 | -9.7 | -1.3 | 11.1 | 18.2 | 16.6 | 17.6 | 14.8 | 6.2 | -1.7 | -2.9 |
| Absolute minimum temperature (°C) | -25.0 | -28.6 | -19.4 | -10.6 | 0.0 | 12.2 | 11.0 | 13.7 | 8.4 | -5.7 | -11.4 | -9.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.1 | 10.4 | 11.9 | 13.5 | 14.9 | 15.7 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.7 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 3.2 | 7.5 | 7.2 | 8.5 | 11.8 | 13.4 | 13.0 | 11.6 | 10.2 | 7.7 | 6.7 | 4.0 |
| Precipitation (mm) | 15 | 26 | 52 | 70 | 47 | 96 | 42 | 116 | 85 | 82 | 6 | 84 |
| Sunny days | 20 | 18 | 15 | 12 | 18 | 14 | 14 | 18 | 17 | 16 | 24 | 21 |
| Rainy days | 4 | 5 | 3 | 14 | 13 | 16 | 17 | 13 | 13 | 13 | 5 | 7 |
| Snow days | 7 | 5 | 13 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 3 |
The best time to visit Wheaton during the most sunny months:
Months with the longest average daylight duration in Wheaton:
The largest precipitation sum in Wheaton is at