Weather in Rapid City: December
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Average day temperature: | 37.5°F |
| Average night temperature: | 26.9°F | |
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Number of sunny days: | 16 days |
| Day length: | 8.9 - 9.1 hours | |
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Number of days with precipitation: | 1 day |
| Precipitation totals: | 0.2 in. | |
| more information | ||
14 days
forecast
forecast
| Rapid City |
weather in
January
January
| Rapid City |
Air temperature in December, °F
Show year:
2025
2024
2023
The highest day temperature during December of 2025 was 62°F. At the same time the lowest night temperature was 8°F. Daily and nightly averages during December were 44.4°F and 30.5°F.
Sunny, partly cloudy and cloudy days
Mostly all days in December are sunny but cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Rapid City in December is 0.2 in. Other months of the year show relatively similar values.
Wind speed in December, mph
The average wind speed value in December is 9.6 mph It makes December one of the most windy months of the year.
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: 6.0.
Best time for vacation in Rapid City
Rapid City on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Rapid City
Local time: 18:43
December 30, tuesday
2100
34°F
NE
4 mph
4 mph
December 31, wednesday
0000
34°F
NE
5 mph
5 mph
0300
34°F
NE
3 mph
3 mph
0600
34°F
E
5 mph
5 mph
0900
39°F
SE
6 mph
6 mph
1200
52°F
S
6 mph
6 mph
1500
55°F
S
13 mph
13 mph
1800
48°F
SW
6 mph
6 mph
