Portal North Dakota Climate Data

Monthly Average Climate Data for Portal North Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January-2.0 °F16.7 °F0.7 in.
February1.5 °F21.4 °F0.56 in.
March13.7 °F33.2 °F0.75 in.
April27.4 °F51.3 °F0.98 in.
May39.6 °F64.3 °F2.28 in.
June50.5 °F72.9 °F3.64 in.
July54.5 °F78.7 °F2.64 in.
August52.0 °F79.1 °F1.66 in.
September42.7 °F69.0 °F1.44 in.
October30.0 °F52.8 °F1.39 in.
November16.3 °F34.6 °F0.77 in.
December4.0 °F21.5 °F0.72 in.
Annual27.5 °F49.6 °F17.53 in.

Climate Data for Portal North Dakota

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 3b : -35°F to -30°F
Plant Hardiness Zone - 2012Zone 3b : -35°F to -30°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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