Bismarck North Dakota Climate Data

Monthly Average Climate Data for Bismarck North Dakota

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-16.3 °C-5.1 °C12.95 mm
February-13.8 °C-2.6 °C12.45 mm
March-7.7 °C4.4 °C18.8 mm
April-1.1 °C12.8 °C30.73 mm
May5.8 °C19.7 °C66.29 mm
June11.6 °C24.9 °C85.6 mm
July14.4 °C28.6 °C83.82 mm
August13.1 °C28.2 °C59.44 mm
September7.8 °C22.8 °C44.45 mm
October0.5 °C13.9 °C35.05 mm
November-6.8 °C4.7 °C18.8 mm
December-12.9 °C-2.3 °C16 mm
Annual-0.5 °C12.5 °C484.38 mm

Climate Data for Bismarck North Dakota

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 1 - Jun. 10
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 4a : -34.4°C to -31.7°C
Plant Hardiness Zone - 2012Zone 4a : -34.4°C to -31.7°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year