Grand Marais Minnesota Climate Data

Monthly Average Climate Data for Grand Marais Minnesota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January5.3 °F21.8 °F1.42 in.
February7.0 °F25.7 °F1.11 in.
March17.5 °F34.6 °F1.3 in.
April30.1 °F44.3 °F2.16 in.
May38.6 °F54.1 °F2.74 in.
June45.3 °F62.4 °F3.73 in.
July53.3 °F70.2 °F3.54 in.
August55.3 °F70.5 °F2.63 in.
September49.0 °F63.4 °F2.83 in.
October37.9 °F51.3 °F2.91 in.
November25.7 °F38.6 °F2.18 in.
December13.0 °F27.1 °F1.86 in.
Annual31.5 °F47 °F28.41 in.

Climate Data for Grand Marais Minnesota

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year