WeatherWX.com
Charleston Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 51°F Lo 36°F | Hi 55°F Lo 39°F | Hi 64°F Lo 47°F | Hi 72°F Lo 54°F | Hi 81°F Lo 63°F | Hi 89°F Lo 71°F | Hi 91°F Lo 73°F | Hi 90°F Lo 72°F | Hi 86°F Lo 67°F | Hi 75°F Lo 56°F | Hi 62°F Lo 45°F | Hi 55°F Lo 41°F |
| 8 mph | 8 mph | 8 mph | 8 mph | 7 mph | 6 mph | 5 mph | 5 mph | 6 mph | 7 mph | 7 mph | 8 mph |
| 1.6 in | 1.9 in | 2.2 in | 2.1 in | 1.9 in | 1.2 in | 1.5 in | 1.4 in | 1.2 in | 1.5 in | 1.3 in | 1.9 in |
| 76% | 79% | 78% | 76% | 75% | 73% | 74% | 74% | 71% | 68% | 71% | 78% |
| 44% | 49% | 47% | 36% | 34% | 30% | 33% | 33% | 30% | 29% | 33% | 47% |
| 30.2 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 | 30.2 in | 30.1 in |
| 24 | 21 | 23 | 23 | 23 | 24 | 23 | 23 | 25 | 26 | 25 | 24 |
| 6 | 7 | 8 | 7 | 8 | 6 | 8 | 8 | 5 | 5 | 5 | 7 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | 3 | 4 | 5 | 6 | 6 | 6 | 6 | 5 | 4 | 3 | 3 |
| 61 | 49 | 51 | 66 | 69 | 75 | 72 | 73 | 78 | 81 | 72 | 56 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 11°C Lo 2°C | Hi 13°C Lo 4°C | Hi 18°C Lo 8°C | Hi 22°C Lo 12°C | Hi 27°C Lo 17°C | Hi 32°C Lo 21°C | Hi 33°C Lo 23°C | Hi 32°C Lo 22°C | Hi 30°C Lo 20°C | Hi 24°C Lo 13°C | Hi 17°C Lo 7°C | Hi 13°C Lo 5°C |
| 13 km/h | 13 km/h | 13 km/h | 13 km/h | 11 km/h | 9 km/h | 9 km/h | 8 km/h | 9 km/h | 11 km/h | 12 km/h | 12 km/h |
| 39 mm | 49 mm | 55 mm | 53 mm | 48 mm | 31 mm | 37 mm | 36 mm | 30 mm | 38 mm | 33 mm | 48 mm |
| 76% | 79% | 78% | 76% | 75% | 73% | 74% | 74% | 71% | 68% | 71% | 78% |
| 44% | 49% | 47% | 36% | 34% | 30% | 33% | 33% | 30% | 29% | 33% | 47% |
| 1021 mb | 1020 mb | 1019 mb | 1015 mb | 1015 mb | 1014 mb | 1015 mb | 1015 mb | 1016 mb | 1017 mb | 1021 mb | 1020 mb |
| 24 | 21 | 23 | 23 | 23 | 24 | 23 | 23 | 25 | 26 | 25 | 24 |
| 6 | 7 | 8 | 7 | 8 | 6 | 8 | 8 | 5 | 5 | 5 | 7 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | 3 | 4 | 5 | 6 | 6 | 6 | 6 | 5 | 4 | 3 | 3 |
| 61 | 49 | 51 | 66 | 69 | 75 | 72 | 73 | 78 | 81 | 72 | 56 |
| 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.