Is this weather normal in McCook County?

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

Weather › South Dakota › McCook County

McCook County just had its 4th-warmest September in 132 years, +5° against the usual. Every one of the last 12 months ran warmer than usual there.

This week

Usual for Oct 28 to Nov 3: highs near 52°, lows near 30°

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

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usual high for the datewarmercooler

The last 12 months

Oct: +6.2°OctNov: +3.4°NovDec: +1.0°DecJan 2026: +2.1°JanFeb: +9.7°FebMar: +6.2°MarApr: +0.7°AprMay: +1.6°MayJun: +0.8°JunJul: +4.5°JulAug: +1.8°AugSep: +5.4°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: -0.8 inOctNov: +0.5 inNovDec: -0.0 inDecJan 2026: -0.3 inJanFeb: -0.7 inFebMar: -0.6 inMarApr: -0.8 inAprMay: -1.4 inMayJun: -0.8 inJunJul: -0.3 inJulAug: -1.3 inAugSep: +3.2 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 McCook County

MonthUsual high / lowUsual rainWarmestColdest
January26° / 8°0.5 in31.2° 20060.1° 1937
February32° / 12°0.8 in34.7° 1954-4.8° 1936
March44° / 23°1.3 in50.0° 201216.4° 1899
April58° / 34°2.8 in55.0° 195536.7° 2018
May70° / 46°3.7 in70.7° 193449.2° 1907
June80° / 57°4.1 in77.9° 193360.7° 1945
July84° / 62°3.1 in83.6° 193664.6° 1992
August82° / 59°3.3 in77.7° 194764.4° 1915
September75° / 50°2.9 in68.7° 193152.4° 1965
October60° / 37°2.2 in57.7° 196336.1° 1925
November44° / 23°1.0 in43.7° 200116.3° 1896
December30° / 13°0.7 in31.2° 20230.8° 1983

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

Towns in McCook County

Nearby counties