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Marion County, MO

: September 2026 so far averaged 74.6°F in Marion County, MO, the warmest 1 to 29 September in the county average since the data begin in 1951 (county average from NOAA gridded data, 1951 to 2026).

Last updated . This page normally updates every day; the latest update is late.

High
79.7°F
Warmest since 2025
21st warmest of 76
Low
53.4°F
Warmest since 2025
28th warmest of 76

No measurable precipitation in the county average of Marion County, MO for 1 day to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).

Every 29 September high of the county average in Marion County, MO since 1951: 79.7°F in 2026; the highest is 99.1°F, in 1953.
2025: 88.5°F1953: 99.1°F2026: 79.7°F 2026 79.7°F 1953 99.1°F since 2025 1951 2026
  • Normal range, 62.8 to 80.7°F
Every year as a table

Every 29 September low of the county average in Marion County, MO since 1951: 53.4°F in 2026; the lowest is 34.4°F, in 1984.

YearHigh, °FLow, °F
202679.753.4
202588.556.5
202479.258.9
202381.156.4
20226540.5
202189.258.5
202065.646.3
201977.164.3
201865.847
201774.747.4
201663.750.4
201580.559.9
20148456.7
201375.748.6
201271.145.3
201173.954.1
201073.449.2
200965.446.4
200879.960.3
20078051.6
200662.843.4
200569.841.3
200470.643.3
200359.437.1
200282.454.7
200168.844.9
200074.749.5
199956.646
199882.164.1
199776.753.6
199669.945.4
199578.351.1
199472.445.6
199368.141.4
199262.739.4
199176.248.7
199077.456.3
198974.942.1
198882.660.9
198776.555.3
198686.165.9
198570.549.3
198455.334.4
198383.856.6
198280.759.2
198172.447.8
198074.245.7
197985.554.5
197870.545.8
197772.450
197665.751.9
197566.250.1
19746941.2
197378.858.9
197275.246.1
197189.267.4
197075.746.7
196979.353.3
196875.951.5
196758.335.1
196668.252.2
196577.954.1
196467.140.4
196377.446.9
196270.240.2
19616841.3
196074.749
195971.747.9
195870.744.8
195770.436.1
195686.356.6
19558258.9
195485.164
195399.165.9
195288.557
195161.236.8

The month

August 2026 averaged 75.7°F in Marion County, MO, the warmest August in the county average since 2021, tied 52nd warmest of 132 (with 1948 and 1945) (county average from NOAA's monthly county data, 1895 to 2026).

The month in words
  • Tuesday 29 September 2026: a high of 79.7°F averaged over Marion County, MO, the warmest 29 September in the county average since 2025, 21st warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 53.4°F averaged over Marion County, MO, the warmest 29 September night in the county average since 2025, 28th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Quincy, IL 24.9 mi, the nearest city with its own station