Delmont South Dakota Climate Data

Monthly Average Climate Data for Delmont South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January10.5 °F31.1 °F0.57 in.
February14.4 °F36.2 °F0.78 in.
March24.5 °F48.1 °F1.25 in.
April35.3 °F59.8 °F2.99 in.
May47.6 °F71.5 °F3.74 in.
June58.4 °F81.7 °F3.8 in.
July63.3 °F87.4 °F3.02 in.
August61.1 °F85.3 °F2.99 in.
September51.6 °F77.8 °F2.75 in.
October38.3 °F62.8 °F2.21 in.
November25.1 °F47.5 °F0.92 in.
December14.9 °F34.2 °F0.73 in.
Annual37.1 °F60.3 °F25.75 in.

Climate Data for Delmont 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 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation