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 = 'apple-river' and st_surl='illinois' and iso_cc = 'US' and prim_loc in (1,2) Apple River Illinois Climate Data - Updated February 2026

Apple River Illinois Climate Data

Monthly Average Climate Data for Apple River Illinois

Switch Data to Celsius/Metric Units

Month	Avg. Low	Avg. High	Avg. Precip
January	10.9 °F	27.2 °F	1.41 in.
February	14.3 °F	31.5 °F	1.59 in.
March	25.3 °F	44.0 °F	2.17 in.
April	36.2 °F	57.7 °F	3.91 in.
May	48.0 °F	69.4 °F	4.38 in.
June	58.1 °F	78.8 °F	5.72 in.
July	61.7 °F	81.9 °F	4.67 in.
August	59.5 °F	80.2 °F	4.15 in.
September	51.2 °F	73.7 °F	3.71 in.
October	39.6 °F	60.9 °F	2.96 in.
November	28.6 °F	45.7 °F	2.41 in.
December	17.6 °F	32.8 °F	1.8 in.
Annual	37.6 °F	57 °F	38.88 in.

Climate Data for Apple River Illinois

Average First Frost Date	Oct. 1 - Oct. 10
Average Last Frost Date	Apr. 21 - Apr. 30
Average Days With Frost	100-125 Days
Plant Hardiness Zone	Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012	Zone 5a : -20°F to -15°F
Current Drought Conditions	Moderate Drought
Köppen Climate Classification	Dfa - Humid Continental Hot Summers With Year Around Precipitation

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