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 = 'fairfield' and st_surl='iowa' and iso_cc = 'US' and prim_loc in (1,2) Fairfield Iowa Climate Data - Updated February 2026

Fairfield Iowa Climate Data

Monthly Average Climate Data for Fairfield Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.7 °F31.7 °F1.46 in.
February18.2 °F36.2 °F1.71 in.
March29.0 °F49.2 °F2.3 in.
April39.9 °F62.6 °F3.77 in.
May51.7 °F72.7 °F5.41 in.
June61.7 °F82.1 °F5.06 in.
July65.3 °F85.8 °F4.13 in.
August62.8 °F84.0 °F3.99 in.
September53.9 °F77.5 °F3.62 in.
October42.3 °F64.7 °F2.93 in.
November30.7 °F49.4 °F2.3 in.
December20.7 °F36.7 °F1.72 in.
Annual40.9 °F61.1 °F38.4 in.

Climate Data for Fairfield Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost100-125 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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