Mahnomen Minnesota Climate Data

Monthly Average Climate Data for Mahnomen Minnesota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January-1.4 °F16.3 °F0.86 in.
February1.3 °F21.0 °F0.7 in.
March16.0 °F34.4 °F1.02 in.
April30.4 °F51.2 °F1.53 in.
May42.7 °F65.6 °F3.0 in.
June54.0 °F74.7 °F4.58 in.
July57.9 °F79.0 °F3.55 in.
August55.3 °F78.2 °F2.92 in.
September46.6 °F69.5 °F2.95 in.
October34.4 °F53.8 °F2.36 in.
November20.0 °F36.3 °F0.95 in.
December6.1 °F22.5 °F1.01 in.
Annual30.3 °F50.2 °F25.43 in.

Climate Data for Mahnomen Minnesota

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