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-bluff' and st_surl='illinois' and iso_cc = 'US' and prim_loc in (1,2) Lake Bluff Illinois Climate Data - Updated February 2026

Lake Bluff Illinois Climate Data

Monthly Average Climate Data for Lake Bluff Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.0 °F30.9 °F2.12 in.
February19.8 °F34.3 °F2.06 in.
March28.6 °F43.8 °F2.28 in.
April38.5 °F54.5 °F4.15 in.
May48.3 °F65.6 °F4.68 in.
June58.5 °F75.7 °F4.26 in.
July65.3 °F80.9 °F4.0 in.
August64.9 °F79.4 °F3.93 in.
September57.1 °F73.1 °F4.02 in.
October45.1 °F61.2 °F3.37 in.
November33.6 °F47.8 °F2.71 in.
December23.0 °F36.3 °F2.07 in.
Annual41.6 °F57 °F39.65 in.

Climate Data for Lake Bluff Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness ZoneZone 6a : -10°F to -5°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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