Average annual temperature is 13.6 °C
Absolute maximum temperature: 37.0 °C
Absolute minimum temperature: -13.6 °C
Number of sunny days: 206 days
Number of rainy days: 151 days
Number of snow days: 8 days
Look at detailed online map of Sumner
* Weather data for 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) | 15.0 | 16.9 | 22.6 | 28.4 | 33.0 | 33.5 | 36.9 | 37.0 | 33.5 | 31.1 | 22.8 | 16.0 |
| Average daytime temperature (°C) | 5.8 | 9.6 | 10.7 | 19.4 | 26.6 | 30.2 | 31.0 | 29.7 | 27.7 | 20.3 | 12.7 | 8.8 |
| Average temperature (°C) | 1.0 | 2.6 | 5.2 | 12.5 | 19.7 | 24.0 | 25.1 | 24.6 | 21.5 | 15.0 | 7.0 | 4.7 |
| Average night temperature (°C) | -2.5 | -2.3 | 1.2 | 6.6 | 13.4 | 18.4 | 20.0 | 20.4 | 16.4 | 10.7 | 2.5 | 1.6 |
| Absolute minimum temperature (°C) | -11.6 | -13.6 | -10.4 | -0.6 | 3.8 | 12.2 | 15.4 | 14.0 | 10.9 | -2.4 | -7.4 | -5.2 |
| 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 | 13.3 | 14.4 | 14.9 | 14.7 | 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) | 5.8 | 7.8 | 6.9 | 10.2 | 11.2 | 12.3 | 11.2 | 10.7 | 10.6 | 7.7 | 7.1 | 5.0 |
| Precipitation (mm) | 74 | 83 | 83 | 70 | 65 | 61 | 57 | 123 | 24 | 65 | 19 | 89 |
| Sunny days | 17 | 17 | 12 | 22 | 17 | 17 | 13 | 14 | 23 | 18 | 23 | 13 |
| Rainy days | 10 | 9 | 18 | 8 | 14 | 13 | 18 | 17 | 7 | 13 | 7 | 17 |
| Snow days | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Sumner during the most sunny months:
The largest precipitation sum in Sumner is at