Grand Forks North Dakota Climate Data

Monthly Average Climate Data for Grand Forks North Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January-2.5 °F15.0 °F0.59 in.
February1.1 °F19.8 °F0.56 in.
March15.3 °F32.9 °F0.88 in.
April30.5 °F51.3 °F1.07 in.
May43.1 °F66.0 °F2.82 in.
June54.8 °F75.6 °F3.81 in.
July58.4 °F79.9 °F3.44 in.
August55.5 °F79.4 °F3.03 in.
September46.6 °F70.2 °F2.52 in.
October34.1 °F54.2 °F1.91 in.
November19.4 °F36.0 °F0.8 in.
December5.8 °F20.9 °F0.76 in.
Annual30.2 °F50.1 °F22.19 in.

Climate Data for Grand Forks North Dakota

Average First Frost DateSep. 21 - Sep. 30
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