Marion County, IA
: September 2026 so far averaged 70.2°F in Marion County, IA, the warmest 1 to 29 September in the county average since 2005, 2nd warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- High
- 77.4°F
- Warmest since 2025
- 20th warmest of 76
- Low
- 55.1°F
- Warmest since 2025
- 16th warmest of 76
No measurable precipitation in the county average of Marion County, IA for 1 day to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 36.8 to 55.4°F
Every year as a table
Every 29 September high of the county average in Marion County, IA since 1951: 77.4°F in 2026; the highest is 94°F, in 1953.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 77.4 | 55.1 |
| 2025 | 86.6 | 56.2 |
| 2024 | 83.6 | 54.2 |
| 2023 | 77.1 | 55.3 |
| 2022 | 64.4 | 33.6 |
| 2021 | 87.7 | 58 |
| 2020 | 61.1 | 46.8 |
| 2019 | 68.7 | 54.1 |
| 2018 | 49.7 | 41.8 |
| 2017 | 76.2 | 47.4 |
| 2016 | 61.3 | 48.3 |
| 2015 | 83.6 | 57 |
| 2014 | 81.9 | 54.6 |
| 2013 | 70.1 | 43.1 |
| 2012 | 73.6 | 39.7 |
| 2011 | 77.4 | 55.3 |
| 2010 | 73.3 | 49.2 |
| 2009 | 63 | 44.7 |
| 2008 | 73.4 | 56.6 |
| 2007 | 73.8 | 45.9 |
| 2006 | 60.5 | 42.6 |
| 2005 | 62.3 | 36.9 |
| 2004 | 69.7 | 40 |
| 2003 | 58.3 | 33.6 |
| 2002 | 79.5 | 50.2 |
| 2001 | 71.1 | 43 |
| 2000 | 76.5 | 47.2 |
| 1999 | 62.4 | 42.2 |
| 1998 | 82.2 | 59.5 |
| 1997 | 77.7 | 53.4 |
| 1996 | 69.1 | 46.6 |
| 1995 | 80.1 | 50 |
| 1994 | 73 | 42.9 |
| 1993 | 65.5 | 35.7 |
| 1992 | 59.7 | 35 |
| 1991 | 72 | 40.6 |
| 1990 | 75.6 | 50.6 |
| 1989 | 76.4 | 43 |
| 1988 | 69.4 | 61.1 |
| 1987 | 73.6 | 54.8 |
| 1986 | 80.3 | 61.6 |
| 1985 | 57.4 | 43.6 |
| 1984 | 55.7 | 29.6 |
| 1983 | 85.4 | 59.4 |
| 1982 | 80.2 | 57.5 |
| 1981 | 69.8 | 40.4 |
| 1980 | 76.3 | 49.7 |
| 1979 | 83.8 | 52.9 |
| 1978 | 70.5 | 41.5 |
| 1977 | 73.2 | 46.3 |
| 1976 | 60.9 | 46.5 |
| 1975 | 67 | 50.8 |
| 1974 | 62.1 | 35.8 |
| 1973 | 71.2 | 58.9 |
| 1972 | 72.2 | 39.5 |
| 1971 | 86.9 | 59.8 |
| 1970 | 74.9 | 42.2 |
| 1969 | 76.1 | 50.3 |
| 1968 | 68.3 | 50 |
| 1967 | 59.7 | 31.8 |
| 1966 | 66.9 | 46 |
| 1965 | 77.2 | 54.6 |
| 1964 | 67.9 | 35.4 |
| 1963 | 73.4 | 43.7 |
| 1962 | 70.8 | 39.2 |
| 1961 | 63.1 | 39 |
| 1960 | 66.1 | 48.1 |
| 1959 | 60.8 | 40.3 |
| 1958 | 72.8 | 42.9 |
| 1957 | 70.2 | 36.2 |
| 1956 | 82.8 | 50.8 |
| 1955 | 77.9 | 54.3 |
| 1954 | 78.2 | 59.8 |
| 1953 | 94 | 63.1 |
| 1952 | 87.2 | 53.9 |
| 1951 | 59.6 | 34.6 |
The month
August 2026 averaged 73.9°F in Marion County, IA, the warmest August in the county average since 2023, tied 42nd warmest of 132 (with 1922) (county average from NOAA's monthly county data, 1895 to 2026).
The month in words
- Tuesday 29 September 2026: a high of 77.4°F averaged over Marion County, IA, the warmest 29 September in the county average since 2025, tied 20th warmest of 76 (with 2011) (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 55.1°F averaged over Marion County, IA, the warmest 29 September night in the county average since 2025, 16th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Des Moines, IA 32.2 mi, the nearest city with its own station