Hecla South Dakota Climate Data

Monthly Average Climate Data for Hecla South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January1.0 °F19.9 °F0.52 in.
February5.3 °F25.0 °F0.58 in.
March17.7 °F37.7 °F0.9 in.
April31.0 °F54.2 °F1.74 in.
May44.4 °F67.6 °F3.31 in.
June55.5 °F77.0 °F3.99 in.
July59.6 °F82.0 °F3.6 in.
August56.7 °F80.8 °F2.39 in.
September47.0 °F72.5 °F2.5 in.
October33.6 °F57.2 °F2.09 in.
November19.9 °F39.4 °F0.69 in.
December8.0 °F25.8 °F0.63 in.
Annual31.6 °F53.3 °F22.94 in.

Climate Data for Hecla South Dakota

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4a : -30°F to -25°F
Plant Hardiness Zone - 2012Zone 4a : -30°F to -25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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