WeatherWX.com
Charleston Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 57°F Lo 47°F | Hi 60°F Lo 50°F | Hi 64°F Lo 54°F | Hi 71°F Lo 61°F | Hi 78°F Lo 69°F | Hi 84°F Lo 75°F | Hi 87°F Lo 78°F | Hi 86°F Lo 78°F | Hi 83°F Lo 74°F | Hi 75°F Lo 66°F | Hi 66°F Lo 56°F | Hi 61°F Lo 52°F |
| 11 mph | 11 mph | 11 mph | 11 mph | 10 mph | 9 mph | 9 mph | 9 mph | 10 mph | 10 mph | 11 mph | 11 mph |
| 3.9 in | 4.9 in | 5.5 in | 5.5 in | 7.6 in | 9.6 in | 11.2 in | 15 in | 10.4 in | 6.8 in | 3.9 in | 5.6 in |
| 72% | 75% | 73% | 74% | 75% | 76% | 75% | 76% | 75% | 72% | 72% | 76% |
| 35% | 39% | 36% | 26% | 26% | 25% | 24% | 27% | 29% | 26% | 31% | 37% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 26 | 23 | 25 | 24 | 22 | 18 | 18 | 15 | 21 | 26 | 26 | 25 |
| 5 | 5 | 6 | 6 | 9 | 12 | 13 | 16 | 9 | 5 | 4 | 6 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | 4 | 4 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 4 |
| 300 | 260 | 310 | 326 | 345 | 335 | 358 | 347 | 321 | 337 | 307 | 305 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 14°C Lo 8°C | Hi 16°C Lo 10°C | Hi 18°C Lo 12°C | Hi 22°C Lo 16°C | Hi 25°C Lo 20°C | Hi 29°C Lo 24°C | Hi 30°C Lo 26°C | Hi 30°C Lo 26°C | Hi 28°C Lo 24°C | Hi 24°C Lo 19°C | Hi 19°C Lo 13°C | Hi 16°C Lo 11°C |
| 17 km/h | 17 km/h | 17 km/h | 17 km/h | 16 km/h | 15 km/h | 15 km/h | 14 km/h | 15 km/h | 16 km/h | 17 km/h | 17 km/h |
| 98 mm | 126 mm | 139 mm | 140 mm | 192 mm | 243 mm | 283 mm | 380 mm | 265 mm | 174 mm | 100 mm | 143 mm |
| 72% | 75% | 73% | 74% | 75% | 76% | 75% | 76% | 75% | 72% | 72% | 76% |
| 35% | 39% | 36% | 26% | 26% | 25% | 24% | 27% | 29% | 26% | 31% | 37% |
| 1020 mb | 1020 mb | 1019 mb | 1017 mb | 1017 mb | 1015 mb | 1016 mb | 1015 mb | 1016 mb | 1017 mb | 1020 mb | 1020 mb |
| 26 | 23 | 25 | 24 | 22 | 18 | 18 | 15 | 21 | 26 | 26 | 25 |
| 5 | 5 | 6 | 6 | 9 | 12 | 13 | 16 | 9 | 5 | 4 | 6 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | 4 | 4 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 4 |
| 300 | 260 | 310 | 326 | 345 | 335 | 358 | 347 | 321 | 337 | 307 | 305 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.
