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 = 'morristown' and st_surl='south-dakota' and iso_cc = 'US' and prim_loc in (1,2) Morristown South Dakota Climate Data - Updated February 2026

Morristown South Dakota Climate Data

Monthly Average Climate Data for Morristown South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January5.6 °F25.9 °F0.33 in.
February9.1 °F29.9 °F0.48 in.
March19.1 °F41.7 °F0.75 in.
April29.8 °F55.7 °F1.37 in.
May41.6 °F67.3 °F2.79 in.
June51.8 °F77.1 °F3.18 in.
July57.2 °F84.9 °F2.96 in.
August55.1 °F84.5 °F1.87 in.
September45.4 °F74.9 °F1.47 in.
October32.4 °F58.4 °F1.45 in.
November19.5 °F42.2 °F0.61 in.
December9.4 °F30.0 °F0.42 in.
Annual31.3 °F56 °F17.68 in.

Climate Data for Morristown South Dakota

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness ZoneZone 4b : -25°F to -20°F
Plant Hardiness Zone - 2012Zone 4a : -30°F to -25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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