Average annual temperature is 16.9 °C
Absolute maximum temperature: 42.6 °C
Absolute minimum temperature: -8.6 °C
Number of sunny days: 270 days
Number of rainy days: 86 days
Number of snow days: 9 days
Look at detailed online map of Lake Sumner
* Weather data for Lake 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) | 21.8 | 21.6 | 24.8 | 30.2 | 32.8 | 40.1 | 42.6 | 41.1 | 38.3 | 31.8 | 28.3 | 21.0 |
| Average daytime temperature (°C) | 12.4 | 14.7 | 18.8 | 24.3 | 28.6 | 33.5 | 37.6 | 35.6 | 31.8 | 24.5 | 17.9 | 12.9 |
| Average temperature (°C) | 5.9 | 6.3 | 11.2 | 15.6 | 20.7 | 25.8 | 30.4 | 28.8 | 24.4 | 16.8 | 10.2 | 6.1 |
| Average night temperature (°C) | 0.9 | 0.1 | 4.7 | 8.0 | 13.6 | 17.8 | 23.0 | 22.1 | 17.5 | 10.1 | 4.2 | 1.1 |
| Absolute minimum temperature (°C) | -6.5 | -8.6 | -3.5 | -0.3 | 8.6 | 12.5 | 17.8 | 17.5 | 13.3 | -2.2 | -4.3 | -4.6 |
| 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 | 10.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 8.0 | 8.8 | 9.7 | 11.6 | 11.8 | 12.7 | 12.8 | 11.8 | 10.7 | 9.9 | 8.4 | 7.9 |
| Precipitation (mm) | 11 | 9 | 4 | 3 | 47 | 36 | 6 | 21 | 15 | 15 | 8 | 54 |
| Sunny days | 26 | 19 | 21 | 25 | 17 | 19 | 25 | 20 | 24 | 25 | 25 | 24 |
| Rainy days | 3 | 5 | 9 | 5 | 14 | 11 | 6 | 11 | 6 | 5 | 5 | 6 |
| Snow days | 2 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
The largest precipitation sum in Lake Sumner is at