Is this weather normal in Yankton County?

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

Weather › South Dakota › Yankton County

Every one of the last 12 months ran warmer than usual in Yankton County. Yankton County is in severe drought: NOAA's Palmer reading for September was -3.6.

This week

Usual for Oct 28 to Nov 3: highs near 54°, lows near 31°

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

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usual high for the datewarmercooler

The last 12 months

Oct: +6.5°OctNov: +3.6°NovDec: +2.4°DecJan 2026: +2.4°JanFeb: +10.0°FebMar: +7.3°MarApr: +1.2°AprMay: +1.5°MayJun: +1.2°JunJul: +4.3°JulAug: +1.7°AugSep: +4.8°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: -1.3 inOctNov: -0.3 inNovDec: -0.2 inDecJan 2026: -0.5 inJanFeb: -0.8 inFebMar: -1.1 inMarApr: -0.9 inAprMay: -1.7 inMayJun: -1.4 inJunJul: -0.9 inJulAug: -1.6 inAugSep: +2.8 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 Yankton County

MonthUsual high / lowUsual rainWarmestColdest
January29° / 10°0.6 in33.8° 20062.4° 1978
February34° / 14°0.8 in36.2° 1954-2.8° 1936
March47° / 25°1.5 in51.6° 201217.6° 1899
April60° / 36°3.1 in55.8° 198138.6° 2018
May71° / 47°3.7 in71.3° 193450.6° 1907
June81° / 59°4.1 in78.4° 193362.1° 1945
July86° / 63°3.2 in85.6° 193666.4° 1992
August83° / 61°3.4 in79.5° 194765.4° 1915
September76° / 51°3.0 in70.5° 189753.2° 1965
October62° / 38°2.4 in59.7° 196338.5° 1925
November46° / 25°1.2 in44.9° 199918.4° 1896
December32° / 15°0.8 in32.4° 20232.4° 1983

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

Towns in Yankton County

Crime Radar: Yankton

Nearby counties