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

Brooklyn Iowa Climate Data

Monthly Average Climate Data for Brooklyn Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.6 °F27.9 °F1.1 in.
February14.9 °F32.7 °F1.38 in.
March26.1 °F45.8 °F2.13 in.
April37.2 °F59.5 °F3.6 in.
May50.0 °F71.2 °F4.74 in.
June61.0 °F81.2 °F5.5 in.
July64.1 °F84.5 °F4.36 in.
August61.2 °F82.7 °F4.36 in.
September52.2 °F75.6 °F3.59 in.
October40.2 °F62.2 °F2.91 in.
November28.1 °F46.7 °F2.1 in.
December17.7 °F33.6 °F1.53 in.
Annual38.7 °F58.6 °F37.3 in.

Climate Data for Brooklyn 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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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