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

Clifton Illinois Climate Data

Monthly Average Climate Data for Clifton Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.4 °F32.3 °F2.16 in.
February19.4 °F36.8 °F1.9 in.
March28.9 °F48.8 °F2.46 in.
April39.1 °F61.9 °F3.71 in.
May50.7 °F72.9 °F4.45 in.
June60.4 °F81.8 °F4.71 in.
July63.7 °F84.6 °F4.42 in.
August61.4 °F83.0 °F3.65 in.
September53.4 °F78.1 °F3.11 in.
October42.1 °F65.2 °F3.3 in.
November31.6 °F50.1 °F2.63 in.
December21.9 °F37.4 °F2.14 in.
Annual40.8 °F61.1 °F38.64 in.

Climate Data for Clifton Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost75-100 Days
Plant Hardiness ZoneZone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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