Grenville South Dakota Climate Data

Monthly Average Climate Data for Grenville South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January2.5 °F20.7 °F0.63 in.
February6.0 °F25.4 °F0.59 in.
March17.9 °F37.3 °F0.91 in.
April31.6 °F52.9 °F2.17 in.
May45.2 °F66.4 °F2.86 in.
June56.4 °F76.0 °F3.73 in.
July61.0 °F80.9 °F3.99 in.
August59.3 °F79.8 °F2.49 in.
September50.6 °F71.8 °F2.35 in.
October36.7 °F56.7 °F2.19 in.
November22.7 °F39.5 °F0.69 in.
December9.7 °F25.8 °F0.73 in.
Annual33.3 °F52.8 °F23.33 in.

Climate Data for Grenville 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 4a : -30°F to -25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year