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

Dubuque Iowa Climate Data

Monthly Average Climate Data for Dubuque Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.3 °F27.8 °F1.29 in.
February14.3 °F32.2 °F1.49 in.
March26.2 °F45.1 °F2.08 in.
April37.8 °F58.8 °F3.83 in.
May49.2 °F70.9 °F4.5 in.
June59.8 °F80.5 °F5.68 in.
July63.6 °F83.7 °F4.97 in.
August61.5 °F81.8 °F3.93 in.
September53.1 °F75.0 °F3.7 in.
October41.2 °F61.6 °F2.86 in.
November29.2 °F46.0 °F2.25 in.
December17.9 °F33.3 °F1.71 in.
Annual38.8 °F58.1 °F38.29 in.

Climate Data for Dubuque Iowa

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 11 - Apr. 20
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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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