Williston North Dakota Climate Data

Monthly Average Climate Data for Williston North Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January2.8 °F22.6 °F0.41 in.
February7.1 °F27.7 °F0.27 in.
March18.0 °F40.1 °F0.5 in.
April30.3 °F55.9 °F1.02 in.
May41.5 °F67.1 °F2.28 in.
June51.6 °F76.2 °F2.87 in.
July57.1 °F84.2 °F2.72 in.
August54.4 °F84.0 °F1.57 in.
September44.1 °F73.3 °F1.38 in.
October32.1 °F57.1 °F0.96 in.
November18.6 °F39.6 °F0.54 in.
December8.0 °F27.0 °F0.44 in.
Annual30.5 °F54.6 °F14.96 in.

Climate Data for Williston 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 ClassificationBSk - Cold Semi-Arid Climate
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