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

Rowan Iowa Climate Data

Monthly Average Climate Data for Rowan Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January7.9 °F24.9 °F0.85 in.
February11.7 °F29.6 °F1.0 in.
March23.7 °F42.4 °F2.03 in.
April35.0 °F57.4 °F3.84 in.
May48.1 °F69.4 °F5.06 in.
June58.7 °F79.6 °F5.7 in.
July61.8 °F82.3 °F4.42 in.
August58.7 °F80.1 °F4.2 in.
September49.7 °F74.4 °F3.21 in.
October37.4 °F60.9 °F2.43 in.
November25.5 °F44.3 °F1.72 in.
December14.4 °F30.6 °F1.31 in.
Annual36.1 °F56.3 °F35.77 in.

Climate Data for Rowan Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
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
2026 plantmaps.com