Weather in Charleston: December
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Average day temperature: | 44.5°F |
| Average night temperature: | 37.5°F | |
 |
Number of sunny days: | 7 days |
| Day length: | 9.5 - 9.7 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.1 in. | |
| more information | ||
14 days
forecast
forecast
| Charleston |
weather in
January
January
| Charleston |
Air temperature in December, °F
Show year:
2025
2024
2023
The highest day temperature during December of 2025 was 65°F. At the same time the lowest night temperature was 9°F. Daily and nightly averages during December were 40.4°F and 34.5°F.
Sunny, partly cloudy and cloudy days
Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Charleston in December is 1.1 in. Other months of the year show relatively similar values.
Wind speed in December, mph
The average wind speed value in December is 6.0 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 4.0.
Best time for vacation in Charleston
Charleston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Charleston
Local time: 05:19
September 19, saturday
0600
66°F
NW
2 mph
2 mph
0900
66°F
W
1 mph
1 mph
1200
81°F
N
2 mph
2 mph
1500
86°F
SE
4 mph
4 mph
1800
82°F
S
2 mph
2 mph
2100
73°F
NW
3 mph
3 mph
September 20, sunday
0000
70°F
N
4 mph
4 mph
0300
70°F
N
4 mph
4 mph
