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

Tennant Iowa Climate Data

Monthly Average Climate Data for Tennant Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.1 °F29.4 °F0.81 in.
February15.4 °F34.3 °F1.03 in.
March26.1 °F47.6 °F1.88 in.
April37.0 °F60.4 °F3.52 in.
May49.4 °F70.9 °F4.97 in.
June59.7 °F80.6 °F5.01 in.
July63.4 °F83.8 °F3.79 in.
August60.6 °F81.8 °F4.15 in.
September51.5 °F76.0 °F3.43 in.
October40.0 °F63.6 °F2.64 in.
November27.2 °F47.2 °F1.48 in.
December17.4 °F34.4 °F1.29 in.
Annual38.2 °F59.2 °F34 in.

Climate Data for Tennant Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness ZoneZone 5b : -15°F to -10°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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