Chelsea South Dakota Climate Data

Monthly Average Climate Data for Chelsea South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January2.6 °F22.3 °F0.51 in.
February7.0 °F27.8 °F0.64 in.
March19.0 °F40.4 °F0.95 in.
April31.3 °F55.7 °F2.1 in.
May44.4 °F68.6 °F3.31 in.
June55.4 °F78.2 °F3.66 in.
July60.0 °F83.5 °F3.28 in.
August57.1 °F82.2 °F2.42 in.
September47.4 °F74.0 °F2.11 in.
October33.9 °F58.9 °F2.02 in.
November20.3 °F41.7 °F0.71 in.
December8.5 °F27.4 °F0.61 in.
Annual32.2 °F55.1 °F22.32 in.

Climate Data for Chelsea 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 4b : -25°F to -20°F
Plant Hardiness Zone - 2012Zone 4a : -30°F to -25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation