Average annual temperature is 7.7 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: -27.8 °C
Number of sunny days: 177 days
Number of rainy days: 145 days
Number of snow days: 43 days
Look at detailed online map of Town of Sumner
* Weather data for Town of Sumner 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) | 2.7 | 5.6 | 6.0 | 25.6 | 30.7 | 30.6 | 31.1 | 32.1 | 33.3 | 28.4 | 16.1 | 11.8 |
| Average daytime temperature (°C) | -3.5 | -1.5 | 2.0 | 10.1 | 21.4 | 26.3 | 25.6 | 25.9 | 22.9 | 13.5 | 5.6 | 3.4 |
| Average temperature (°C) | -6.8 | -6.9 | -2.6 | 4.4 | 14.8 | 20.2 | 20.2 | 20.4 | 17.7 | 9.4 | 1.2 | -0.4 |
| Average night temperature (°C) | -9.5 | -11.3 | -6.5 | 0.2 | 9.2 | 15.1 | 15.4 | 15.9 | 13.9 | 6.0 | -1.9 | -2.8 |
| Absolute minimum temperature (°C) | -26.1 | -27.8 | -15.3 | -8.2 | -1.4 | 8.4 | 11.4 | 10.1 | 5.7 | -6.8 | -14.6 | -11.3 |
| 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) | 9.2 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.8 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 3.6 | 7.0 | 6.8 | 7.5 | 10.3 | 12.5 | 12.4 | 11.3 | 8.4 | 7.0 | 5.7 | 4.5 |
| Precipitation (mm) | 55 | 66 | 63 | 145 | 48 | 115 | 92 | 56 | 161 | 81 | 18 | 48 |
| Sunny days | 18 | 16 | 15 | 12 | 15 | 16 | 7 | 18 | 12 | 11 | 20 | 17 |
| Rainy days | 3 | 4 | 5 | 14 | 16 | 14 | 24 | 13 | 18 | 17 | 8 | 9 |
| Snow days | 10 | 8 | 11 | 4 | 0 | 0 | 0 | 0 | 0 | 3 | 2 | 5 |
The best time to visit Town of Sumner during the most sunny months:
Months with the longest average daylight duration in Town of Sumner:
The largest precipitation sum in Town of Sumner is at