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 = 'williams-bay' and st_surl='wisconsin' and iso_cc = 'US' and prim_loc in (1,2) Williams Bay Wisconsin Climate Data - Updated February 2026

Williams Bay Wisconsin Climate Data

Monthly Average Climate Data for Williams Bay Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.2 °F28.7 °F1.82 in.
February15.9 °F32.7 °F1.79 in.
March25.3 °F44.3 °F2.2 in.
April35.6 °F57.4 °F3.77 in.
May47.3 °F69.0 °F4.34 in.
June56.8 °F78.7 °F5.51 in.
July61.2 °F82.5 °F3.64 in.
August59.4 °F81.0 °F4.07 in.
September51.5 °F74.4 °F3.61 in.
October40.2 °F61.2 °F2.97 in.
November29.5 °F46.4 °F2.37 in.
December19.1 °F33.9 °F2.04 in.
Annual37.9 °F57.5 °F38.13 in.

Climate Data for Williams Bay Wisconsin

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 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 ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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