Average annual temperature is 13.0 °C
Absolute maximum temperature: 37.2 °C
Absolute minimum temperature: -14.9 °C
Number of sunny days: 206 days
Number of rainy days: 148 days
Number of snow days: 11 days
Look at detailed online map of Summum
* Weather data for Summum 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) | 17.8 | 14.2 | 21.3 | 27.0 | 32.8 | 33.7 | 36.3 | 37.2 | 32.0 | 30.3 | 23.6 | 15.7 |
| Average daytime temperature (°C) | 5.3 | 8.3 | 10.3 | 18.5 | 25.6 | 30.1 | 30.1 | 28.3 | 26.3 | 19.1 | 11.7 | 8.1 |
| Average temperature (°C) | 0.8 | 2.3 | 4.6 | 11.7 | 19.1 | 23.6 | 24.5 | 23.4 | 20.7 | 14.1 | 6.5 | 4.1 |
| Average night temperature (°C) | -2.1 | -2.1 | 0.5 | 6.0 | 12.9 | 17.5 | 19.6 | 19.3 | 15.9 | 10.0 | 2.3 | 1.4 |
| Absolute minimum temperature (°C) | -14.1 | -14.9 | -10.5 | -0.3 | 4.5 | 10.6 | 15.7 | 12.2 | 10.7 | -1.6 | -9.1 | -6.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 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) | 4.6 | 7.6 | 6.7 | 10.1 | 11.4 | 12.9 | 12.6 | 10.4 | 10.3 | 7.5 | 7.6 | 4.8 |
| Precipitation (mm) | 48 | 102 | 102 | 61 | 31 | 25 | 69 | 211 | 25 | 61 | 23 | 77 |
| Sunny days | 15 | 17 | 14 | 17 | 22 | 21 | 13 | 13 | 17 | 17 | 22 | 18 |
| Rainy days | 9 | 9 | 15 | 13 | 9 | 9 | 18 | 18 | 13 | 14 | 8 | 13 |
| Snow days | 7 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Summum during the most sunny months:
The largest precipitation sum in Summum is at