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

Superior Iowa Climate Data

Monthly Average Climate Data for Superior Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January6.6 °F23.5 °F0.78 in.
February10.1 °F27.7 °F0.83 in.
March22.2 °F40.4 °F1.68 in.
April34.2 °F56.0 °F3.29 in.
May46.9 °F68.4 °F4.5 in.
June57.8 °F78.5 °F4.83 in.
July61.8 °F82.7 °F3.67 in.
August58.8 °F79.8 °F3.67 in.
September50.5 °F74.1 °F3.13 in.
October37.1 °F59.5 °F2.35 in.
November24.6 °F42.9 °F1.31 in.
December12.4 °F28.6 °F0.95 in.
Annual35.3 °F55.2 °F30.99 in.

Climate Data for Superior 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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