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

Roswell South Dakota Climate Data

Monthly Average Climate Data for Roswell South Dakota

Switch Data to Celsius/Metric Units

Month	Avg. Low	Avg. High	Avg. Precip
January	6.7 °F	25.4 °F	0.51 in.
February	10.9 °F	30.8 °F	0.67 in.
March	21.8 °F	43.0 °F	1.19 in.
April	33.7 °F	57.5 °F	2.73 in.
May	46.3 °F	69.4 °F	3.6 in.
June	57.4 °F	79.4 °F	3.78 in.
July	61.5 °F	84.8 °F	2.87 in.
August	59.3 °F	82.6 °F	2.82 in.
September	50.5 °F	74.9 °F	2.78 in.
October	36.5 °F	60.5 °F	2.13 in.
November	22.9 °F	43.7 °F	0.88 in.
December	11.6 °F	30.0 °F	0.58 in.
Annual	34.9 °F	56.8 °F	24.54 in.

Climate Data for Roswell South Dakota

Average First Frost Date	Oct. 1 - Oct. 10
Average Last Frost Date	May 1 - May 10
Average Days With Frost	100-125 Days
Plant Hardiness Zone	Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012	Zone 4b : -25°F to -20°F
Current Drought Conditions	Abnormally Dry
Köppen Climate Classification	Dfa - Humid Continental Hot Summers With Year Around Precipitation

2026 plantmaps.com