Average annual temperature is 13.3 °C
Absolute maximum temperature: 42.1 °C
Absolute minimum temperature: -14.4 °C
Number of sunny days: 230 days
Number of rainy days: 126 days
Number of snow days: 9 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) | 11.7 | 16.7 | 21.7 | 29.6 | 32.7 | 37.0 | 38.8 | 42.1 | 36.2 | 32.9 | 21.6 | 15.7 |
| Average daytime temperature (°C) | 4.4 | 8.5 | 10.5 | 20.4 | 25.9 | 30.0 | 31.5 | 32.7 | 29.5 | 20.1 | 12.2 | 7.7 |
| Average temperature (°C) | -0.4 | 1.4 | 4.3 | 12.5 | 19.1 | 23.8 | 25.3 | 26.1 | 22.9 | 14.3 | 6.7 | 3.2 |
| Average night temperature (°C) | -4.0 | -3.6 | -0.2 | 6.4 | 13.3 | 18.0 | 20.3 | 20.9 | 17.2 | 9.6 | 2.6 | -0.2 |
| Absolute minimum temperature (°C) | -13.9 | -14.4 | -9.6 | -3.5 | 4.7 | 10.8 | 14.9 | 14.3 | 11.9 | -5.3 | -6.2 | -5.8 |
| 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) | 9.7 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 6.5 | 8.4 | 7.9 | 10.4 | 10.9 | 12.3 | 11.4 | 11.7 | 10.5 | 7.9 | 6.8 | 5.1 |
| Precipitation (mm) | 59 | 55 | 33 | 62 | 39 | 70 | 103 | 69 | 11 | 36 | 31 | 72 |
| Sunny days | 23 | 21 | 17 | 22 | 17 | 18 | 10 | 20 | 23 | 17 | 23 | 19 |
| Rainy days | 6 | 6 | 13 | 8 | 14 | 12 | 21 | 11 | 7 | 14 | 5 | 9 |
| Snow days | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 |
The best time to visit Wheaton during the most sunny months:
The largest precipitation sum in Wheaton is at