Bismarck North Dakota Climate Data

Monthly Average Climate Data for Bismarck North Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January2.6 °F22.8 °F0.51 in.
February7.2 °F27.4 °F0.49 in.
March18.2 °F40.0 °F0.74 in.
April30.0 °F55.1 °F1.21 in.
May42.4 °F67.4 °F2.61 in.
June52.8 °F76.8 °F3.37 in.
July57.9 °F83.5 °F3.3 in.
August55.6 °F82.8 °F2.34 in.
September46.0 °F73.1 °F1.75 in.
October32.9 °F57.1 °F1.38 in.
November19.7 °F40.5 °F0.74 in.
December8.8 °F27.9 °F0.63 in.
Annual31.2 °F54.5 °F19.07 in.

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 : -30°F to -25°F
Plant Hardiness Zone - 2012Zone 4a : -30°F to -25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year