Willow River Minnesota Climate Data

Monthly Average Climate Data for Willow River Minnesota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January0.1 °F20.5 °F0.82 in.
February3.7 °F26.1 °F0.82 in.
March16.3 °F38.3 °F1.45 in.
April28.9 °F51.8 °F2.44 in.
May40.4 °F65.7 °F3.4 in.
June50.4 °F74.8 °F4.64 in.
July55.9 °F80.0 °F4.47 in.
August53.9 °F77.9 °F3.94 in.
September45.8 °F69.6 °F3.21 in.
October34.3 °F55.0 °F3.01 in.
November22.0 °F38.8 °F1.6 in.
December8.7 °F25.5 °F1.17 in.
Annual30 °F52 °F30.97 in.

Climate Data for Willow River Minnesota

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 3b : -35°F to -30°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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