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

Clarksville Iowa Climate Data

Monthly Average Climate Data for Clarksville Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.8 °F26.0 °F0.97 in.
February13.1 °F30.3 °F1.1 in.
March24.6 °F43.6 °F1.86 in.
April36.4 °F58.9 °F3.84 in.
May49.0 °F70.9 °F4.97 in.
June59.9 °F80.5 °F5.82 in.
July63.0 °F83.3 °F4.46 in.
August60.3 °F81.2 °F4.13 in.
September51.7 °F75.3 °F3.49 in.
October39.3 °F61.8 °F2.63 in.
November26.6 °F45.1 °F1.78 in.
December15.7 °F31.6 °F1.4 in.
Annual37.4 °F57.4 °F36.45 in.

Climate Data for Clarksville Iowa

Average First Frost DateOct. 1 - Oct. 10
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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2026 plantmaps.com