select pnm,lnm,st_cd,st_nm,cnty_id,dm,dm_date,dm_hist,avg_tmax_data,avg_tmin_data,avg_prcp_data,rec_hi_data,rec_lo_data,avg_sndp_data,x,y,ff,lf,fd,hz,er,hz_source,kg,hzd,clim_stn_nm,hz12,hz90, feels_like_min,feels_like_max,days_of_prcp,snow,cloud_cover,humidity,wind_speed from worldtg8_pm.pm_climate_points_namer where surl = 'grand-marais' and st_surl='michigan' and iso_cc = 'US' and prim_loc in (1,2) Grand Marais Michigan Climate Data - Updated February 2026

Grand Marais Michigan Climate Data

Monthly Average Climate Data for Grand Marais Michigan

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.0 °F25.0 °F2.41 in.
February10.7 °F27.4 °F1.66 in.
March17.2 °F36.5 °F1.92 in.
April27.9 °F48.2 °F2.7 in.
May38.4 °F61.4 °F2.56 in.
June47.9 °F71.2 °F2.95 in.
July52.9 °F75.4 °F2.93 in.
August54.2 °F76.0 °F2.28 in.
September48.8 °F68.8 °F3.55 in.
October37.7 °F54.9 °F4.17 in.
November27.9 °F41.3 °F2.9 in.
December17.8 °F31.1 °F2.56 in.
Annual32.7 °F51.4 °F32.59 in.

Climate Data for Grand Marais Michigan

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness ZoneZone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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