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

Delhi Iowa Climate Data

Monthly Average Climate Data for Delhi Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.3 °F25.9 °F1.24 in.
February12.2 °F30.4 °F1.32 in.
March23.9 °F43.5 °F2.14 in.
April35.0 °F57.3 °F3.97 in.
May46.9 °F68.9 °F4.75 in.
June57.4 °F78.6 °F5.98 in.
July60.6 °F81.6 °F4.74 in.
August58.2 °F79.8 °F4.5 in.
September49.3 °F73.5 °F3.88 in.
October37.5 °F60.4 °F3.04 in.
November25.8 °F44.8 °F2.29 in.
December15.3 °F31.7 °F1.67 in.
Annual35.9 °F56.4 °F39.52 in.

Climate Data for Delhi Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness ZoneZone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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