Is this weather normal in Sanborn County?

South Dakota · county records since 1895, through September 2026.

Weather › South Dakota › Sanborn County

6.2 inches fell in September, the 2nd-most for a September in Sanborn County in 132 years. 10 of the last 12 months ran warmer than usual there.

This week

Usual for Oct 28 to Nov 3: highs near 52°, lows near 29°

That is the 1991 to 2020 average for these dates in Sanborn County. The Weather Service forecast fills in below.

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usual high for the datewarmercooler

The last 12 months

Oct: +5.9°OctNov: +3.8°NovDec: +1.1°DecJan 2026: +1.9°JanFeb: +9.5°FebMar: +5.6°MarApr: -0.5°AprMay: +0.6°MayJun: 0.0°JunJul: +4.5°JulAug: +1.3°AugSep: +4.7°Sepwarmercooler

Each bar is a month's average temperature against the usual for that month (1991 to 2020). Ranks compare the same month in every year since 1895.

Every year since 1895

18952025

Rain and drought

Oct: -1.1 inOctNov: +0.9 inNovDec: +0.0 inDecJan 2026: -0.4 inJanFeb: -0.7 inFebMar: -0.5 inMarApr: -0.4 inAprMay: -2.4 inMayJun: -0.1 inJunJul: -0.8 inJulAug: -0.7 inAugSep: +3.7 inSepwetterdrier

Rain and melted snow against the usual for each month. The drought reading is NOAA's Palmer index for the county.

Month by month in Sanborn County

MonthUsual high / lowUsual rainWarmestColdest
January26° / 7°0.5 in31.8° 2006-0.4° 1937
February32° / 11°0.7 in36.2° 1954-5.8° 1936
March44° / 23°1.1 in47.9° 201216.8° 1899
April58° / 34°2.6 in55.0° 189535.9° 2018
May70° / 46°3.4 in71.0° 193449.8° 1907
June80° / 57°3.8 in78.6° 193360.8° 1945
July86° / 62°3.0 in85.1° 193665.7° 1992
August83° / 59°2.9 in78.8° 193765.1° 1915
September76° / 50°2.5 in69.5° 189751.9° 1965
October61° / 36°2.0 in57.7° 196337.2° 1925
November44° / 22°0.8 in42.6° 199915.6° 1896
December31° / 12°0.6 in30.7° 20231.2° 1983

Warmest and coldest are the month's whole-month average temperature, with the year it happened.

Towns in Sanborn County

Nearby counties