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

Spencer Iowa Climate Data

Monthly Average Climate Data for Spencer Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January7.3 °F25.0 °F0.69 in.
February11.3 °F29.2 °F0.8 in.
March23.3 °F42.1 °F1.58 in.
April35.1 °F57.6 °F3.4 in.
May47.8 °F69.5 °F4.25 in.
June58.6 °F79.9 °F4.61 in.
July62.1 °F83.6 °F3.71 in.
August59.3 °F81.1 °F3.7 in.
September50.5 °F75.0 °F3.18 in.
October37.4 °F60.9 °F2.35 in.
November24.5 °F44.5 °F1.42 in.
December13.4 °F30.3 °F0.92 in.
Annual35.9 °F56.6 °F30.61 in.

Climate Data for Spencer Iowa

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateApr. 21 - Apr. 30
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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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