Rapid City South Dakota Climate Data

Monthly Average Climate Data for Rapid City South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.7 °F36.8 °F0.33 in.
February16.2 °F38.1 °F0.51 in.
March24.3 °F47.7 °F0.99 in.
April32.7 °F55.6 °F2.17 in.
May43.2 °F64.8 °F4.03 in.
June53.4 °F76.5 °F3.3 in.
July60.1 °F84.9 °F2.53 in.
August58.1 °F84.0 °F2.18 in.
September48.9 °F74.9 °F1.5 in.
October36.3 °F60.4 °F1.52 in.
November25.6 °F47.9 °F0.5 in.
December16.8 °F38.0 °F0.39 in.
Annual35.9 °F59.1 °F19.95 in.

Climate Data for Rapid City South Dakota

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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