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 = 'ortonville' and st_surl='michigan' and iso_cc = 'US' and prim_loc in (1,2) Ortonville Michigan Climate Data - Updated February 2026

Ortonville Michigan Climate Data

Monthly Average Climate Data for Ortonville Michigan

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.5 °F29.7 °F2.14 in.
February16.1 °F32.7 °F1.7 in.
March24.4 °F42.7 °F2.02 in.
April35.5 °F55.8 °F3.11 in.
May47.0 °F67.9 °F3.79 in.
June56.6 °F77.2 °F3.39 in.
July60.4 °F81.1 °F3.47 in.
August59.3 °F79.3 °F3.14 in.
September52.0 °F73.2 °F2.93 in.
October40.9 °F59.8 °F2.81 in.
November31.2 °F46.7 °F2.33 in.
December22.3 °F34.9 °F2.06 in.
Annual38.4 °F56.8 °F32.89 in.

Climate Data for Ortonville Michigan

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness ZoneZone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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