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 = 'rockwell-city' and st_surl='iowa' and iso_cc = 'US' and prim_loc in (1,2) Rockwell City Iowa Climate Data - Updated February 2026

Rockwell City Iowa Climate Data

Monthly Average Climate Data for Rockwell City Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January9.0 °F26.5 °F0.76 in.
February13.0 °F31.0 °F0.99 in.
March25.0 °F44.9 °F1.94 in.
April35.9 °F59.2 °F3.61 in.
May48.6 °F70.1 °F4.92 in.
June59.6 °F80.2 °F5.15 in.
July63.0 °F83.1 °F3.6 in.
August60.4 °F80.8 °F4.02 in.
September51.3 °F75.1 °F2.94 in.
October38.8 °F62.1 °F2.46 in.
November26.0 °F45.5 °F1.41 in.
December15.2 °F31.8 °F1.32 in.
Annual37.2 °F57.5 °F33.12 in.

Climate Data for Rockwell City Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness ZoneZone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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