Is this weather normal in Sullivan County?

Missouri · county records since 1895, through September 2026.

Weather › Missouri › Sullivan County

Sullivan County just had its warmest September ever recorded, +7° against the usual. 11 of the last 12 months ran warmer than usual there.

This week

Usual for Oct 28 to Nov 3: highs near 58°, lows near 37°

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

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usual high for the datewarmercooler

The last 12 months

Oct: +6.3°OctNov: +2.5°NovDec: +0.1°DecJan 2026: -1.1°JanFeb: +7.2°FebMar: +6.7°MarApr: +6.0°AprMay: +0.5°MayJun: +0.2°JunJul: +2.4°JulAug: +1.3°AugSep: +7.3°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: -0.3 inOctNov: -0.4 inNovDec: -0.4 inDecJan 2026: -0.1 inJanFeb: -1.5 inFebMar: -0.9 inMarApr: +3.2 inAprMay: -1.5 inMayJun: +2.7 inJunJul: -2.2 inJulAug: -0.1 inAugSep: +3.5 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 Sullivan County

MonthUsual high / lowUsual rainWarmestColdest
January34° / 16°1.2 in36.6° 20068.2° 1940
February39° / 21°1.6 in41.4° 202411.9° 1936
March52° / 31°2.4 in55.2° 201224.8° 1960
April63° / 41°3.8 in59.1° 191543.8° 2018
May73° / 52°5.5 in71.2° 201856.9° 1907
June82° / 62°5.1 in79.6° 193465.8° 1928
July86° / 66°4.5 in85.8° 193670.4° 2009
August85° / 63°4.2 in83.6° 193668.0° 1992
September77° / 55°4.1 in73.2° 202659.7° 1993
October65° / 43°3.1 in65.6° 196343.6° 1925
November51° / 32°2.3 in50.0° 200132.3° 1991
December39° / 22°1.6 in38.8° 202312.2° 1983

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

Towns in Sullivan County

Nearby counties