Madison County, IL
: September 2026 so far averaged 76.9°F in Madison County, IL, 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
- 81.8°F
- Warmest since 2025
- 24th warmest of 76
- Low
- 50.5°F
- Warmest since 2025
- 38th warmest of 76
No measurable precipitation in the county average of Madison County, IL for 2 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 65.9 to 84.5°F
Every year as a table
Every 29 September low of the county average in Madison County, IL since 1951: 50.5°F in 2026; the lowest is 37.1°F, in 1951.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 81.8 | 50.5 |
| 2025 | 87.9 | 56.6 |
| 2024 | 75.4 | 64.2 |
| 2023 | 82.8 | 61.2 |
| 2022 | 65.2 | 40.4 |
| 2021 | 88.8 | 60.5 |
| 2020 | 66.8 | 47.9 |
| 2019 | 84.7 | 66.8 |
| 2018 | 75.5 | 48.7 |
| 2017 | 74.7 | 48.2 |
| 2016 | 65.7 | 52.8 |
| 2015 | 82.8 | 64.6 |
| 2014 | 85 | 54.9 |
| 2013 | 84.1 | 57.4 |
| 2012 | 71 | 48.8 |
| 2011 | 73.3 | 53 |
| 2010 | 74.9 | 49.7 |
| 2009 | 67.7 | 48.4 |
| 2008 | 83 | 57.3 |
| 2007 | 84.5 | 52.9 |
| 2006 | 64.4 | 44.6 |
| 2005 | 79.1 | 45.8 |
| 2004 | 73.1 | 44 |
| 2003 | 62 | 39.4 |
| 2002 | 82.4 | 55.1 |
| 2001 | 65.9 | 44.6 |
| 2000 | 73.6 | 47 |
| 1999 | 82 | 53.5 |
| 1998 | 84.9 | 63.5 |
| 1997 | 72.9 | 53.1 |
| 1996 | 69.2 | 44.7 |
| 1995 | 80 | 50.1 |
| 1994 | 73.1 | 45.4 |
| 1993 | 70.8 | 42.3 |
| 1992 | 67.8 | 38.7 |
| 1991 | 79.5 | 51.9 |
| 1990 | 82.5 | 59.5 |
| 1989 | 75.3 | 42.8 |
| 1988 | 81.5 | 60 |
| 1987 | 80.2 | 59.2 |
| 1986 | 90.4 | 71.4 |
| 1985 | 76.3 | 47.8 |
| 1984 | 60.4 | 41.1 |
| 1983 | 84.6 | 53.1 |
| 1982 | 78 | 54.7 |
| 1981 | 72.1 | 49.3 |
| 1980 | 73 | 47.5 |
| 1979 | 86.1 | 57.9 |
| 1978 | 72.1 | 44 |
| 1977 | 74.2 | 51.8 |
| 1976 | 71 | 49.2 |
| 1975 | 72 | 49.4 |
| 1974 | 68.3 | 46.5 |
| 1973 | 81 | 63.3 |
| 1972 | 82.1 | 56.4 |
| 1971 | 90.4 | 68.2 |
| 1970 | 74 | 47.6 |
| 1969 | 76.1 | 49.7 |
| 1968 | 79.3 | 51 |
| 1967 | 59.4 | 39.5 |
| 1966 | 70.7 | 48.9 |
| 1965 | 78.3 | 51.4 |
| 1964 | 70.4 | 43.4 |
| 1963 | 78.8 | 50.8 |
| 1962 | 70.6 | 39 |
| 1961 | 72.9 | 43.1 |
| 1960 | 80.1 | 49.2 |
| 1959 | 79.4 | 58.2 |
| 1958 | 68.4 | 43.8 |
| 1957 | 72.4 | 40 |
| 1956 | 85.3 | 51.3 |
| 1955 | 87.4 | 61.3 |
| 1954 | 84.2 | 69.1 |
| 1953 | 98.5 | 61.7 |
| 1952 | 91.3 | 54.1 |
| 1951 | 64.2 | 37.1 |
The month
August 2026 averaged 76.7°F in Madison County, IL, the warmest August in the county average since 2021, tied 48th warmest of 132 (with 2018, 2012, 1975 and 1 other year) (county average from NOAA's monthly county data, 1895 to 2026).
The month in words
- Tuesday 29 September 2026: a high of 81.8°F averaged over Madison County, IL, the warmest 29 September in the county average since 2025, 24th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 50.5°F averaged over Madison County, IL, the warmest 29 September night in the county average since 2025, 38th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
St Louis, MO 26.0 mi, the nearest city with its own station