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

Spillertown Illinois Climate Data

Monthly Average Climate Data for Spillertown Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.0 °F41.1 °F3.63 in.
February27.1 °F46.1 °F3.07 in.
March35.5 °F56.0 °F4.53 in.
April45.6 °F67.4 °F5.45 in.
May55.9 °F76.0 °F5.1 in.
June64.3 °F84.5 °F4.47 in.
July68.0 °F87.4 °F4.03 in.
August65.6 °F86.8 °F3.11 in.
September57.4 °F80.9 °F3.17 in.
October45.9 °F69.7 °F3.52 in.
November35.9 °F56.2 °F4.38 in.
December27.8 °F45.1 °F3.6 in.
Annual46.1 °F66.4 °F48.06 in.

Climate Data for Spillertown Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 1 - Apr. 10
Average Days With Frost50-75 Days
Plant Hardiness ZoneZone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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