Average annual temperature is 8.9 °C
Absolute maximum temperature: 32.2 °C
Absolute minimum temperature: -27.2 °C
Number of sunny days: 134 days
Number of rainy days: 202 days
Number of snow days: 29 days
Look at detailed online map of Town of Charleston
* Weather data for Town of Charleston 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) | 8.4 | 15.2 | 13.8 | 26.9 | 29.5 | 32.2 | 30.7 | 27.1 | 30.3 | 28.2 | 16.6 | 11.0 |
| Average daytime temperature (°C) | 2.7 | 4.3 | 5.1 | 15.4 | 20.1 | 22.7 | 26.7 | 23.8 | 21.2 | 16.8 | 7.0 | 4.5 |
| Average temperature (°C) | -0.9 | -1.9 | -0.3 | 8.5 | 12.9 | 17.0 | 21.1 | 18.6 | 16.1 | 11.6 | 2.0 | 0.9 |
| Average night temperature (°C) | -4.0 | -6.8 | -4.6 | 3.0 | 6.6 | 12.3 | 16.6 | 14.5 | 12.0 | 7.5 | -1.7 | -1.8 |
| Absolute minimum temperature (°C) | -9.2 | -27.2 | -13.2 | -5.7 | 0.0 | 6.8 | 11.4 | 10.1 | 4.5 | -0.2 | -7.2 | -8.6 |
| 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 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.2 | 5.7 | 6.3 | 8.1 | 12.0 | 9.7 | 11.0 | 9.7 | 8.1 | 6.6 | 6.3 | 3.0 |
| Precipitation (mm) | 86 | 68 | 117 | 79 | 53 | 130 | 232 | 189 | 84 | 55 | 69 | 143 |
| Sunny days | 9 | 8 | 10 | 14 | 20 | 6 | 7 | 8 | 15 | 14 | 11 | 12 |
| Rainy days | 14 | 13 | 17 | 16 | 11 | 24 | 24 | 23 | 15 | 17 | 15 | 13 |
| Snow days | 8 | 7 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 6 |
The best time to visit Town of Charleston during the most sunny months:
Months with the longest average daylight duration in Town of Charleston:
The largest precipitation sum in Town of Charleston is at