Roslyn South Dakota Climate Data

Monthly Average Climate Data for Roslyn South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January2.5 °F20.3 °F0.67 in.
February6.2 °F25.3 °F0.64 in.
March18.0 °F37.2 °F1.0 in.
April31.6 °F52.7 °F2.2 in.
May45.1 °F66.2 °F3.0 in.
June56.3 °F75.8 °F3.92 in.
July60.9 °F80.7 °F3.93 in.
August59.4 °F79.6 °F2.55 in.
September50.7 °F71.5 °F2.43 in.
October36.7 °F56.4 °F2.26 in.
November22.7 °F39.2 °F0.74 in.
December9.8 °F25.6 °F0.76 in.
Annual33.3 °F52.5 °F24.1 in.

Climate Data for Roslyn 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