Spearfish South Dakota Climate Data

Monthly Average Climate Data for Spearfish South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.7 °F36.7 °F0.73 in.
February15.8 °F37.8 °F1.03 in.
March23.6 °F47.2 °F1.28 in.
April31.7 °F55.7 °F2.63 in.
May41.7 °F65.5 °F4.15 in.
June51.2 °F76.2 °F3.91 in.
July57.8 °F84.9 °F2.45 in.
August55.8 °F84.1 °F1.94 in.
September46.7 °F74.5 °F1.65 in.
October34.8 °F59.6 °F2.22 in.
November24.3 °F46.9 °F0.99 in.
December16.3 °F37.5 °F1.15 in.
Annual34.5 °F58.9 °F24.13 in.

Climate Data for Spearfish South Dakota

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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