Watertown South Dakota Climate Data

Monthly Average Climate Data for Watertown South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January2.8 °F21.6 °F0.68 in.
February6.5 °F26.1 °F0.67 in.
March18.7 °F38.3 °F1.19 in.
April31.3 °F53.9 °F2.3 in.
May44.5 °F66.6 °F2.92 in.
June55.4 °F76.5 °F3.78 in.
July60.0 °F81.8 °F3.23 in.
August57.3 °F79.9 °F2.85 in.
September48.4 °F72.0 °F2.6 in.
October34.7 °F56.9 °F2.23 in.
November21.4 °F40.7 °F0.82 in.
December9.6 °F27.0 °F0.69 in.
Annual32.6 °F53.4 °F23.96 in.

Climate Data for Watertown 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 4b : -25°F to -20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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