Erwin South Dakota Climate Data

Monthly Average Climate Data for Erwin South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January4.2 °F22.0 °F0.56 in.
February8.0 °F27.0 °F0.68 in.
March19.9 °F39.1 °F1.11 in.
April32.6 °F54.4 °F2.43 in.
May45.4 °F66.9 °F3.38 in.
June56.2 °F76.6 °F4.25 in.
July61.0 °F81.5 °F3.4 in.
August58.4 °F79.4 °F3.01 in.
September49.9 °F71.9 °F2.73 in.
October36.0 °F57.3 °F2.19 in.
November22.7 °F40.9 °F0.85 in.
December10.9 °F27.0 °F0.69 in.
Annual33.8 °F53.7 °F25.28 in.

Climate Data for Erwin South Dakota

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4b : -25°F to -20°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation