Delmont South Dakota Climate Data

Monthly Average Climate Data for Delmont South Dakota

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.9 °C-0.5 °C14.48 mm
February-9.8 °C2.3 °C19.81 mm
March-4.2 °C8.9 °C31.75 mm
April1.8 °C15.4 °C75.95 mm
May8.7 °C21.9 °C95 mm
June14.7 °C27.6 °C96.52 mm
July17.4 °C30.8 °C76.71 mm
August16.2 °C29.6 °C75.95 mm
September10.9 °C25.4 °C69.85 mm
October3.5 °C17.1 °C56.13 mm
November-3.8 °C8.6 °C23.37 mm
December-9.5 °C1.2 °C18.54 mm
Annual2.8 °C15.7 °C654.06 mm

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 : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation