Grand Marais Minnesota Climate Data

Monthly Average Climate Data for Grand Marais Minnesota

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-14.8 °C-5.7 °C36.07 mm
February-13.9 °C-3.5 °C28.19 mm
March-8.1 °C1.4 °C33.02 mm
April-1.1 °C6.8 °C54.86 mm
May3.7 °C12.3 °C69.6 mm
June7.4 °C16.9 °C94.74 mm
July11.8 °C21.2 °C89.92 mm
August12.9 °C21.4 °C66.8 mm
September9.4 °C17.4 °C71.88 mm
October3.3 °C10.7 °C73.91 mm
November-3.5 °C3.7 °C55.37 mm
December-10.6 °C-2.7 °C47.24 mm
Annual-0.3 °C8.3 °C721.6 mm

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 : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 4b : -31.7°C to -28.9°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year