Is this weather normal in Mercer County?

Missouri · county records since 1895, through September 2026.

Weather › Missouri › Mercer County

Mercer County just had its 2nd-warmest September in 132 years, +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 57°, lows near 36°

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

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usual high for the datewarmercooler

The last 12 months

Oct: +6.6°OctNov: +2.5°NovDec: +0.1°DecJan 2026: -0.8°JanFeb: +7.8°FebMar: +6.9°MarApr: +5.6°AprMay: +1.3°MayJun: +0.6°JunJul: +2.5°JulAug: +1.6°AugSep: +7.0°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: +0.5 inOctNov: -0.7 inNovDec: -0.3 inDecJan 2026: +0.1 inJanFeb: -1.3 inFebMar: -0.9 inMarApr: +2.4 inAprMay: +0.8 inMayJun: +2.9 inJunJul: -1.9 inJulAug: -0.7 inAugSep: +4.5 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 Mercer County

MonthUsual high / lowUsual rainWarmestColdest
January33° / 16°1.1 in36.4° 20067.4° 1940
February39° / 20°1.4 in41.1° 202410.8° 1936
March51° / 30°2.3 in55.7° 201224.0° 1960
April63° / 41°3.9 in58.8° 198142.9° 2018
May73° / 51°5.3 in70.6° 201856.2° 1907
June82° / 61°5.2 in79.2° 193465.4° 1945
July86° / 65°4.7 in85.2° 190170.3° 1950
August84° / 63°4.3 in83.0° 193667.3° 1992
September77° / 54°4.0 in73.5° 189759.3° 1993
October65° / 42°3.0 in65.3° 196342.7° 1925
November50° / 31°2.2 in49.9° 200131.9° 1991
December38° / 21°1.5 in38.2° 202311.3° 1983

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

Towns in Mercer County

Nearby counties