Jamestown North Dakota Climate Data

Monthly Average Climate Data for Jamestown North Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January0.1 °F18.6 °F0.49 in.
February3.8 °F23.2 °F0.43 in.
March16.2 °F35.8 °F0.76 in.
April29.6 °F52.7 °F1.2 in.
May42.7 °F66.8 °F3.1 in.
June54.0 °F76.3 °F3.59 in.
July58.3 °F81.4 °F3.64 in.
August55.3 °F80.3 °F2.28 in.
September46.1 °F71.3 °F2.35 in.
October32.9 °F55.2 °F1.74 in.
November19.3 °F38.0 °F0.63 in.
December7.4 °F24.1 °F0.61 in.
Annual30.5 °F52 °F20.82 in.

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 : -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
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