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 = 'lake-mills' and st_surl='wisconsin' and iso_cc = 'US' and prim_loc in (1,2) Lake Mills Wisconsin Climate Data - Updated February 2026

Lake Mills Wisconsin Climate Data

Monthly Average Climate Data for Lake Mills Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.3 °F27.1 °F1.49 in.
February14.1 °F30.9 °F1.48 in.
March24.6 °F43.0 °F2.08 in.
April35.9 °F56.6 °F3.81 in.
May47.6 °F69.1 °F4.04 in.
June57.7 °F78.9 °F5.38 in.
July61.8 °F82.5 °F4.28 in.
August59.8 °F80.5 °F4.26 in.
September51.5 °F73.9 °F3.49 in.
October40.0 °F60.5 °F2.91 in.
November28.7 °F45.5 °F2.13 in.
December18.2 °F32.6 °F1.76 in.
Annual37.6 °F56.8 °F37.11 in.

Climate Data for Lake Mills Wisconsin

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness ZoneZone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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