Average annual temperature is 18.8 °C
Absolute maximum temperature: 37.8 °C
Absolute minimum temperature: -1.9 °C
Number of sunny days: 193 days
Number of rainy days: 172 days
Look at detailed online map of Sumter County
* Weather data for Sumter County 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) | 22.7 | 27.6 | 30.1 | 30.8 | 34.3 | 33.7 | 37.8 | 37.7 | 33.3 | 28.6 | 26.7 | 22.8 |
| Average daytime temperature (°C) | 16.1 | 19.8 | 21.3 | 25.2 | 26.4 | 30.2 | 34.4 | 33.3 | 28.4 | 24.0 | 18.4 | 15.7 |
| Average temperature (°C) | 10.9 | 13.8 | 15.1 | 18.7 | 20.8 | 24.6 | 28.5 | 27.7 | 23.3 | 18.5 | 12.8 | 10.3 |
| Average night temperature (°C) | 6.6 | 9.6 | 10.0 | 13.1 | 15.7 | 19.7 | 23.9 | 23.3 | 18.6 | 13.9 | 8.3 | 6.2 |
| Absolute minimum temperature (°C) | -1.9 | -1.2 | 0.1 | 5.0 | 8.0 | 15.1 | 20.3 | 20.9 | 15.1 | 7.4 | -0.4 | -1.9 |
| 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) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 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) | 6.2 | 7.6 | 8.5 | 9.9 | 9.8 | 11.0 | 11.5 | 11.0 | 10.2 | 8.8 | 7.5 | 6.7 |
| Precipitation (mm) | 126 | 122 | 78 | 145 | 95 | 153 | 135 | 159 | 57 | 46 | 55 | 169 |
| Sunny days | 18 | 14 | 18 | 14 | 16 | 12 | 5 | 12 | 18 | 25 | 20 | 21 |
| Rainy days | 13 | 14 | 13 | 16 | 15 | 18 | 26 | 19 | 12 | 6 | 10 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Sumter County during the most sunny months:
The largest precipitation sum in Sumter County is at