Jamestown North Dakota Climate Data

Monthly Average Climate Data for Jamestown North Dakota

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-17.7 °C-7.4 °C12.45 mm
February-15.7 °C-4.9 °C10.92 mm
March-8.8 °C2.1 °C19.3 mm
April-1.3 °C11.5 °C30.48 mm
May5.9 °C19.3 °C78.74 mm
June12.2 °C24.6 °C91.19 mm
July14.6 °C27.4 °C92.46 mm
August12.9 °C26.8 °C57.91 mm
September7.8 °C21.8 °C59.69 mm
October0.5 °C12.9 °C44.2 mm
November-7.1 °C3.3 °C16 mm
December-13.7 °C-4.4 °C15.49 mm
Annual-0.9 °C11.1 °C528.83 mm

Climate Data for Jamestown North 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 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
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