Average annual temperature is 21.6 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: 2.6 °C
Number of sunny days: 150 days
Number of rainy days: 215 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) | 23.5 | 24.0 | 27.2 | 28.6 | 30.1 | 33.1 | 32.0 | 34.9 | 32.0 | 30.2 | 27.2 | 24.0 |
| Average daytime temperature (°C) | 18.6 | 21.5 | 22.9 | 25.7 | 27.2 | 29.0 | 30.4 | 31.8 | 30.2 | 26.7 | 22.5 | 19.1 |
| Average temperature (°C) | 14.6 | 17.4 | 19.2 | 21.8 | 23.4 | 25.8 | 27.8 | 28.6 | 25.9 | 22.1 | 17.8 | 15.1 |
| Average night temperature (°C) | 11.2 | 14.4 | 15.9 | 18.4 | 19.9 | 23.0 | 25.1 | 25.7 | 22.5 | 18.1 | 14.3 | 12.1 |
| Absolute minimum temperature (°C) | 2.6 | 5.9 | 5.5 | 13.0 | 14.9 | 19.9 | 23.3 | 23.2 | 18.5 | 11.4 | 5.0 | 4.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.2 | 12.0 | 12.9 | 13.6 | 14.0 | 13.8 | 13.2 | 12.3 | 11.5 | 10.7 | 10.3 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.5 | 9.0 | 9.9 | 10.2 | 11.8 | 11.3 | 11.1 | 11.6 | 10.6 | 9.7 | 7.5 | 6.8 |
| Precipitation (mm) | 64 | 39 | 56 | 49 | 83 | 232 | 133 | 151 | 88 | 44 | 93 | 117 |
| Sunny days | 17 | 18 | 14 | 12 | 13 | 5 | 3 | 2 | 10 | 20 | 19 | 17 |
| Rainy days | 14 | 10 | 17 | 18 | 18 | 25 | 28 | 29 | 20 | 11 | 11 | 14 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sumner is at