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Rapid City December Weather

Averages and records for weather in Rapid City, South Dakota in the month of December.
Typical Rapid City December Weather
1991–2020
Average daily high 37.7 °F
Average daily low 14.1 °F
Average monthly precipitation 0.4 inches
Average monthly snow 6.7 inches
Rapid City December Weather Records
1948–2022
Highest temperature 75 °F December 2, 2021
Lowest temperature -30 °F December 30, 1990
Highest daily low 46 °F December 22, 1964
Lowest daily high -15 °F December 29, 1990
Hottest average temperature 8.7 °F
above average
1957
Coldest average temperature -18.1 °F
below average
1983
Most daily precipitation 1.0 inches December 31, 1975
Most monthly precipitation 1.7 inches 1975
Most daily snow 9.8 inches December 31, 1975
Most monthly snow 18.0 inches 1975
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
December 1 42.2 17.4 74 -14
December 2 41.8 17.2 75 -19
December 3 41.3 16.9 68 -6
December 4 41.0 16.7 75 -5
December 5 40.7 16.4 67 -22
December 6 40.5 16.2 65 -20
December 7 40.1 16.0 69 -14
December 8 39.8 15.7 68 -23
December 9 39.4 15.4 70 -19
December 10 39.1 15.1 68 -14
December 11 38.9 15.0 71 -19
December 12 38.7 14.9 71 -19
December 13 38.5 14.7 65 -15
December 14 38.4 14.6 70 -25
December 15 38.1 14.4 63 -22
December 16 37.7 14.0 64 -20
December 17 37.4 13.7 69 -23
December 18 37.1 13.4 70 -20
December 19 37.0 13.2 59 -17
December 20 36.9 13.2 63 -20
December 21 36.8 13.1 65 -25
December 22 36.6 13.0 67 -29
December 23 36.4 12.8 66 -27
December 24 36.2 12.7 62 -26
December 25 36.1 12.7 60 -21
December 26 36.1 12.6 60 -23
December 27 35.9 12.5 59 -12
December 28 35.7 12.5 62 -17
December 29 35.5 12.3 65 -29
December 30 35.5 12.2 60 -30
December 31 35.4 12.0 62 -21
Weather Station Details
Years Station Coordinates
1948–2022 Rapid City Regional Airport location