Sinai South Dakota Climate Data

Monthly Average Climate Data for Sinai South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January5.0 °F23.1 °F0.58 in.
February9.3 °F28.0 °F0.71 in.
March20.7 °F40.0 °F1.22 in.
April32.9 °F55.0 °F2.56 in.
May45.6 °F67.5 °F3.65 in.
June56.4 °F77.4 °F4.21 in.
July60.6 °F82.1 °F3.42 in.
August58.3 °F79.6 °F3.22 in.
September49.7 °F72.6 °F2.89 in.
October36.0 °F58.4 °F2.12 in.
November22.7 °F41.8 °F0.99 in.
December11.0 °F28.1 °F0.78 in.
Annual34 °F54.5 °F26.35 in.

Climate Data for Sinai 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 ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation