Average annual temperature is 22.3 °C
Absolute maximum temperature: 42.1 °C
Absolute minimum temperature: -0.1 °C
Number of sunny days: 181 days
Number of rainy days: 184 days
Look at detailed online map of Summerville
* Weather data for Summerville 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) | 27.8 | 28.3 | 31.6 | 32.9 | 31.9 | 38.9 | 39.8 | 42.1 | 40.5 | 34.8 | 30.5 | 26.6 |
| Average daytime temperature (°C) | 19.9 | 20.7 | 25.5 | 25.6 | 28.6 | 35.1 | 37.3 | 39.9 | 35.9 | 28.6 | 21.3 | 20.6 |
| Average temperature (°C) | 14.1 | 14.2 | 19.3 | 19.9 | 23.6 | 28.8 | 30.9 | 32.7 | 29.8 | 22.8 | 16.2 | 14.2 |
| Average night temperature (°C) | 9.9 | 9.8 | 15.0 | 15.5 | 19.6 | 23.6 | 25.6 | 26.8 | 24.9 | 18.4 | 12.4 | 9.3 |
| Absolute minimum temperature (°C) | 0.1 | -0.1 | 5.0 | 10.7 | 13.8 | 18.5 | 23.5 | 24.7 | 22.1 | 6.8 | 4.3 | 1.1 |
| 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) | 6.6 | 6.9 | 7.1 | 8.2 | 9.2 | 11.9 | 12.3 | 11.8 | 10.6 | 8.4 | 6.1 | 7.4 |
| Precipitation (mm) | 95 | 32 | 71 | 251 | 177 | 40 | 20 | 6 | 53 | 103 | 42 | 81 |
| Sunny days | 17 | 12 | 9 | 10 | 7 | 17 | 21 | 22 | 12 | 16 | 16 | 22 |
| Rainy days | 14 | 16 | 22 | 20 | 24 | 13 | 10 | 9 | 18 | 15 | 14 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Summerville during the most sunny months:
The largest precipitation sum in Summerville is at