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

Nisland South Dakota Climate Data

Monthly Average Climate Data for Nisland South Dakota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January10.8 °F34.4 °F0.42 in.
February13.7 °F37.4 °F0.53 in.
March22.7 °F48.1 °F0.95 in.
April31.3 °F58.1 °F2.0 in.
May42.0 °F67.4 °F3.4 in.
June52.0 °F78.5 °F3.02 in.
July58.5 °F87.0 °F2.11 in.
August56.2 °F86.4 °F1.47 in.
September46.0 °F76.6 °F1.21 in.
October33.0 °F61.6 °F1.68 in.
November21.6 °F46.9 °F0.63 in.
December12.6 °F36.2 °F0.56 in.
Annual33.4 °F59.9 °F17.98 in.

Climate Data for Nisland South Dakota

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness ZoneZone 4b : -25°F to -20°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
2026 plantmaps.com