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

Stoy Illinois Climate Data

Monthly Average Climate Data for Stoy Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.8 °F38.0 °F3.19 in.
February24.8 °F43.0 °F2.36 in.
March33.5 °F53.8 °F3.71 in.
April43.9 °F66.0 °F5.2 in.
May54.7 °F76.0 °F4.78 in.
June63.4 °F84.7 °F4.74 in.
July66.1 °F87.7 °F4.25 in.
August63.9 °F86.6 °F2.98 in.
September56.1 °F81.2 °F3.5 in.
October44.7 °F69.0 °F3.71 in.
November34.3 °F54.3 °F3.81 in.
December26.3 °F42.5 °F3.09 in.
Annual44.5 °F65.2 °F45.32 in.

Climate Data for Stoy Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost75-100 Days
Plant Hardiness ZoneZone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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