Rockham South Dakota Climate Data

Monthly Average Climate Data for Rockham South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January3.7 °F23.2 °F0.41 in.
February7.8 °F28.4 °F0.68 in.
March19.7 °F41.1 °F0.99 in.
April31.7 °F56.1 °F2.1 in.
May44.7 °F68.6 °F3.22 in.
June55.6 °F78.4 °F3.64 in.
July60.4 °F84.2 °F3.35 in.
August57.7 °F82.6 °F2.38 in.
September48.1 °F74.3 °F2.17 in.
October34.5 °F58.9 °F1.91 in.
November20.9 °F42.4 °F0.67 in.
December9.6 °F28.3 °F0.54 in.
Annual32.9 °F55.5 °F22.06 in.

Climate Data for Rockham 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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation