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

Flandreau South Dakota Climate Data

Monthly Average Climate Data for Flandreau South Dakota

Switch Data to Celsius/Metric Units

Month	Avg. Low	Avg. High	Avg. Precip
January	4.5 °F	23.0 °F	0.56 in.
February	8.3 °F	27.9 °F	0.76 in.
March	20.3 °F	40.1 °F	1.38 in.
April	32.4 °F	54.5 °F	2.7 in.
May	45.4 °F	67.1 °F	3.73 in.
June	57.1 °F	77.3 °F	4.49 in.
July	60.9 °F	81.7 °F	3.55 in.
August	57.6 °F	79.2 °F	3.46 in.
September	48.5 °F	72.4 °F	3.09 in.
October	35.1 °F	58.3 °F	2.18 in.
November	21.7 °F	41.9 °F	1.05 in.
December	10.4 °F	27.9 °F	0.87 in.
Annual	33.5 °F	54.3 °F	27.82 in.

Climate Data for Flandreau South Dakota

Average First Frost Date	Sep. 21 - Sep. 30
Average Last Frost Date	May 1 - May 10
Average Days With Frost	125-150 Days
Plant Hardiness Zone	Zone 4b : -25°F to -20°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

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