Napoleon North Dakota Climate Data

Monthly Average Climate Data for Napoleon North Dakota

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-17.2 °C-6.8 °C13.46 mm
February-14.9 °C-4.1 °C13.97 mm
March-8.4 °C2.8 °C22.61 mm
April-1.5 °C11.8 °C36.58 mm
May5.5 °C18.8 °C71.88 mm
June11.6 °C23.9 °C95.5 mm
July14.3 °C27.4 °C84.84 mm
August12.9 °C26.9 °C60.2 mm
September7.8 °C22 °C47.24 mm
October0.4 °C12.9 °C44.7 mm
November-7.3 °C3.7 °C16.26 mm
December-13.4 °C-3.9 °C17.53 mm
Annual-0.9 °C11.3 °C524.77 mm

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 : -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