Napoleon North Dakota Climate Data

Monthly Average Climate Data for Napoleon North Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January1.0 °F19.7 °F0.53 in.
February5.1 °F24.7 °F0.55 in.
March16.9 °F37.0 °F0.89 in.
April29.3 °F53.2 °F1.44 in.
May41.9 °F65.8 °F2.83 in.
June52.8 °F75.1 °F3.76 in.
July57.8 °F81.3 °F3.34 in.
August55.3 °F80.5 °F2.37 in.
September46.0 °F71.6 °F1.86 in.
October32.7 °F55.3 °F1.76 in.
November18.9 °F38.6 °F0.64 in.
December7.8 °F25.0 °F0.69 in.
Annual30.5 °F52.3 °F20.66 in.

Climate Data for Napoleon 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