Mercer County, OH
: September 2026 so far averaged 69.1°F in Mercer County, OH, the warmest 1 to 29 September in the county average since 2019, tied 3rd warmest of 76 (with 2016 and 1998) (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- Tuesday 29 September 2026: a high of 75.2°F averaged over Mercer County, OH, the warmest 29 September in the county average since 2025, tied 27th warmest of 76 (with 1963) (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 47°F averaged over Mercer County, OH, the warmest 29 September night in the county average since 2025, 38th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- No measurable precipitation in the county average of Mercer County, OH for 5 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
The month
- August 2026 averaged 71.8°F in Mercer County, OH, the warmest August in the county average since 2024, tied 50th warmest of 132 (with 2022 and 1973) (county average from NOAA's monthly county data, 1895 to 2026).
- Days of the month without a value
- 0
Every year on this date
- Above the normal range
- In it
- Below it
- Normal range
- This year and the extreme
Every year as a table
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 75.2 | 47 |
| 2025 | 88.1 | 55.9 |
| 2024 | 72.5 | 63.5 |
| 2023 | 70.3 | 59.3 |
| 2022 | 58.1 | 39.9 |
| 2021 | 77.7 | 48.8 |
| 2020 | 62.6 | 43.3 |
| 2019 | 81.2 | 61.5 |
| 2018 | 74 | 45.2 |
| 2017 | 71.1 | 45.6 |
| 2016 | 62.7 | 51.1 |
| 2015 | 82 | 61.9 |
| 2014 | 81.3 | 50.6 |
| 2013 | 80.7 | 50.2 |
| 2012 | 66.7 | 45.8 |
| 2011 | 62.6 | 50 |
| 2010 | 64.8 | 44.5 |
| 2009 | 60.8 | 47.8 |
| 2008 | 79.6 | 51.9 |
| 2007 | 74.7 | 44.5 |
| 2006 | 58.9 | 39.7 |
| 2005 | 77.2 | 47.8 |
| 2004 | 68.4 | 47.5 |
| 2003 | 57 | 41.3 |
| 2002 | 73.4 | 52.6 |
| 2001 | 61.9 | 42.2 |
| 2000 | 65.1 | 38.2 |
| 1999 | 85.2 | 59 |
| 1998 | 78.7 | 52.2 |
| 1997 | 78.9 | 50 |
| 1996 | 64.3 | 43.5 |
| 1995 | 81.1 | 47.8 |
| 1994 | 64.3 | 43.4 |
| 1993 | 62.1 | 39 |
| 1992 | 69.9 | 37.4 |
| 1991 | 64.5 | 42.2 |
| 1990 | 77.8 | 55.7 |
| 1989 | 70.6 | 37.3 |
| 1988 | 76 | 49.9 |
| 1987 | 82.2 | 57.5 |
| 1986 | 87.9 | 67.8 |
| 1985 | 72.2 | 43.7 |
| 1984 | 59.2 | 38.8 |
| 1983 | 80.8 | 47.7 |
| 1982 | 73.4 | 48.5 |
| 1981 | 63.5 | 38.6 |
| 1980 | 76.2 | 46.9 |
| 1979 | 71.8 | 52.9 |
| 1978 | 66.4 | 41.3 |
| 1977 | 70.3 | 41 |
| 1976 | 63.4 | 38.9 |
| 1975 | 71 | 40.3 |
| 1974 | 69.6 | 51.5 |
| 1973 | 79.3 | 66 |
| 1972 | 68.9 | 53.9 |
| 1971 | 85.9 | 67 |
| 1970 | 61.4 | 33.8 |
| 1969 | 66.6 | 38.8 |
| 1968 | 67.9 | 44.7 |
| 1967 | 46.6 | 37.8 |
| 1966 | 68 | 44.6 |
| 1965 | 74.6 | 48 |
| 1964 | 63.7 | 40.4 |
| 1963 | 75.2 | 47.6 |
| 1962 | 63 | 35.4 |
| 1961 | 63.8 | 33 |
| 1960 | 76.2 | 45.2 |
| 1959 | 81.8 | 62.4 |
| 1958 | 64.3 | 38.1 |
| 1957 | 65.8 | 36 |
| 1956 | 76.8 | 42.9 |
| 1955 | 74.7 | 50.5 |
| 1954 | 84 | 62.5 |
| 1953 | 90.2 | 51.6 |
| 1952 | 82.9 | 51.4 |
| 1951 | 59.8 | 30.2 |
Nearby
Fort Wayne, IN 42.6 mi, the nearest city with its own station