Average annual temperature is 9.0 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: -26.1 °C
Number of sunny days: 191 days
Number of rainy days: 147 days
Number of snow days: 27 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) | 4.3 | 7.5 | 7.2 | 27.4 | 31.4 | 31.4 | 31.1 | 35.9 | 35.7 | 29.7 | 16.7 | 12.9 |
| Average daytime temperature (°C) | -1.7 | 0.6 | 4.0 | 13.0 | 22.4 | 27.6 | 27.2 | 27.3 | 24.3 | 14.7 | 7.0 | 4.5 |
| Average temperature (°C) | -5.4 | -5.2 | -1.4 | 6.8 | 15.6 | 21.4 | 21.4 | 21.7 | 19.0 | 10.5 | 2.4 | 0.5 |
| Average night temperature (°C) | -8.5 | -9.9 | -6.0 | 2.0 | 10.1 | 15.8 | 16.2 | 17.1 | 14.9 | 7.0 | -1.0 | -1.9 |
| Absolute minimum temperature (°C) | -25.0 | -26.1 | -15.6 | -9.0 | -0.2 | 7.6 | 12.2 | 11.3 | 8.4 | -6.0 | -13.6 | -9.2 |
| 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 | 9.0 |
| Daylight mean duration (h) | 9.3 | 10.4 | 11.9 | 13.5 | 14.8 | 15.5 | 15.2 | 14.0 | 12.5 | 11.0 | 9.6 | 8.9 |
| 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) | 3.9 | 6.5 | 7.0 | 8.0 | 10.5 | 12.3 | 12.0 | 11.3 | 8.6 | 6.5 | 6.1 | 4.5 |
| Precipitation (mm) | 51 | 62 | 60 | 139 | 79 | 61 | 94 | 87 | 162 | 97 | 12 | 37 |
| Sunny days | 20 | 17 | 16 | 12 | 17 | 15 | 9 | 18 | 15 | 12 | 22 | 18 |
| Rainy days | 6 | 7 | 7 | 17 | 14 | 15 | 22 | 13 | 15 | 16 | 7 | 8 |
| Snow days | 5 | 4 | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 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