Average annual temperature is 16.7 °C
Absolute maximum temperature: 37.8 °C
Absolute minimum temperature: -4.4 °C
Number of sunny days: 171 days
Number of rainy days: 194 days
Look at detailed online map of McIllwain
* Weather data for McIllwain 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) | 21.2 | 24.3 | 25.4 | 28.4 | 31.4 | 34.8 | 36.2 | 37.8 | 32.0 | 30.3 | 25.8 | 19.7 |
| Average daytime temperature (°C) | 12.7 | 15.7 | 17.0 | 21.1 | 26.6 | 30.9 | 32.3 | 30.9 | 28.5 | 23.7 | 17.0 | 13.3 |
| Average temperature (°C) | 8.0 | 9.6 | 11.0 | 15.1 | 20.4 | 24.4 | 26.4 | 25.6 | 22.6 | 17.8 | 11.2 | 8.0 |
| Average night temperature (°C) | 4.5 | 5.5 | 6.6 | 10.3 | 15.6 | 19.1 | 22.1 | 21.7 | 18.1 | 13.4 | 7.0 | 4.3 |
| Absolute minimum temperature (°C) | -2.5 | -4.4 | -4.4 | 4.3 | 6.9 | 14.1 | 18.1 | 16.6 | 14.0 | 1.9 | -1.1 | -2.1 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.1 | 6.3 | 7.8 | 9.1 | 11.0 | 12.2 | 11.2 | 10.1 | 10.7 | 7.9 | 7.8 | 6.7 |
| Precipitation (mm) | 195 | 108 | 181 | 132 | 84 | 61 | 223 | 161 | 54 | 37 | 55 | 44 |
| Sunny days | 12 | 13 | 15 | 13 | 10 | 15 | 7 | 13 | 13 | 20 | 22 | 18 |
| Rainy days | 19 | 15 | 16 | 17 | 21 | 15 | 24 | 18 | 17 | 11 | 8 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit McIllwain during the most sunny months:
The largest precipitation sum in McIllwain is at