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 = 'mount-union' and st_surl='iowa' and iso_cc = 'US' and prim_loc in (1,2) Mount Union Iowa Climate Data - Updated February 2026

Mount Union Iowa Climate Data

Monthly Average Climate Data for Mount Union Iowa

Switch Data to Celsius/Metric Units

Month	Avg. Low	Avg. High	Avg. Precip
January	15.3 °F	31.7 °F	1.46 in.
February	19.1 °F	36.5 °F	1.75 in.
March	29.2 °F	49.2 °F	2.44 in.
April	40.2 °F	62.3 °F	3.72 in.
May	52.1 °F	72.8 °F	5.1 in.
June	61.9 °F	82.0 °F	4.9 in.
July	65.2 °F	85.3 °F	4.06 in.
August	63.0 °F	83.8 °F	3.96 in.
September	54.1 °F	77.6 °F	3.6 in.
October	42.6 °F	64.8 °F	2.88 in.
November	31.2 °F	49.5 °F	2.28 in.
December	21.2 °F	37.0 °F	1.8 in.
Annual	41.3 °F	61 °F	37.95 in.

Climate Data for Mount Union Iowa

Average First Frost Date	Oct. 11 - Oct. 20
Average Last Frost Date	Apr. 21 - Apr. 30
Average Days With Frost	75-100 Days
Plant Hardiness Zone	Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012	Zone 5b : -15°F to -10°F
Current Drought Conditions	Abnormally Dry
Köppen Climate Classification	Dfa - Humid Continental Hot Summers With Year Around Precipitation

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