Rapid City South Dakota Climate Data

Monthly Average Climate Data for Rapid City South Dakota

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.6 °C2.7 °C8.38 mm
February-8.8 °C3.4 °C12.95 mm
March-4.3 °C8.7 °C25.15 mm
April0.4 °C13.1 °C55.12 mm
May6.2 °C18.2 °C102.36 mm
June11.9 °C24.7 °C83.82 mm
July15.6 °C29.4 °C64.26 mm
August14.5 °C28.9 °C55.37 mm
September9.4 °C23.8 °C38.1 mm
October2.4 °C15.8 °C38.61 mm
November-3.6 °C8.8 °C12.7 mm
December-8.4 °C3.3 °C9.91 mm
Annual2.1 °C15.1 °C506.73 mm

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 : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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