Average annual temperature is 11.3 °C
Absolute maximum temperature: 35.0 °C
Absolute minimum temperature: -5.7 °C
Number of sunny days: 171 days
Number of rainy days: 193 days
Number of snow days: 1 day
Look at detailed online map of City of Sumner
* Weather data for City 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) | 14.3 | 13.2 | 16.8 | 23.3 | 31.9 | 29.9 | 32.4 | 35.0 | 29.4 | 24.6 | 15.9 | 15.2 |
| Average daytime temperature (°C) | 9.1 | 8.5 | 11.0 | 13.1 | 22.1 | 23.5 | 28.0 | 28.1 | 22.4 | 16.6 | 10.3 | 9.8 |
| Average temperature (°C) | 5.3 | 4.2 | 5.5 | 7.9 | 15.2 | 16.3 | 20.2 | 20.8 | 15.8 | 11.1 | 6.2 | 6.3 |
| Average night temperature (°C) | 2.3 | 1.1 | 1.4 | 4.3 | 10.0 | 10.6 | 13.4 | 14.7 | 11.4 | 7.3 | 3.1 | 3.7 |
| Absolute minimum temperature (°C) | -5.7 | -5.3 | -3.4 | -1.1 | 7.3 | 7.1 | 10.7 | 10.7 | 7.1 | -3.4 | -3.0 | -2.5 |
| 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) | 9.0 | 10.3 | 11.9 | 13.6 | 15.1 | 15.9 | 15.5 | 14.2 | 12.6 | 10.9 | 9.4 | 8.6 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 4.1 | 5.1 | 7.4 | 6.7 | 10.7 | 11.7 | 13.0 | 11.6 | 8.5 | 6.5 | 5.1 | 3.1 |
| Precipitation (mm) | 93 | 82 | 90 | 181 | 24 | 28 | 6 | 27 | 98 | 90 | 166 | 240 |
| Sunny days | 6 | 9 | 9 | 6 | 20 | 21 | 28 | 19 | 14 | 16 | 15 | 8 |
| Rainy days | 24 | 19 | 22 | 24 | 11 | 9 | 3 | 12 | 16 | 15 | 15 | 23 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit City of Sumner during the most sunny months:
Months with the longest average daylight duration in City of Sumner:
The largest precipitation sum in City of Sumner is at