Watertown South Dakota Climate Data

Monthly Average Climate Data for Watertown South Dakota

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-16.2 °C-5.8 °C17.27 mm
February-14.2 °C-3.3 °C17.02 mm
March-7.4 °C3.5 °C30.23 mm
April-0.4 °C12.2 °C58.42 mm
May6.9 °C19.2 °C74.17 mm
June13 °C24.7 °C96.01 mm
July15.6 °C27.7 °C82.04 mm
August14.1 °C26.6 °C72.39 mm
September9.1 °C22.2 °C66.04 mm
October1.5 °C13.8 °C56.64 mm
November-5.9 °C4.8 °C20.83 mm
December-12.4 °C-2.8 °C17.53 mm
Annual0.3 °C11.9 °C608.59 mm

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 : -31.7°C to -28.9°C
Plant Hardiness Zone - 2012Zone 4b : -31.7°C to -28.9°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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