Mercer County, PA
: September 2026 so far averaged 65.8°F in Mercer County, PA, the warmest 1 to 29 September in the county average since 2018, 5th 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.
- Tuesday 29 September 2026: a high of 63.8°F averaged over Mercer County, PA, the coldest 29 September day in the county average since 2022, 28th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 53.8°F averaged over Mercer County, PA, the warmest 29 September night in the county average since 2024, 13th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: 0.01 in of precipitation averaged over Mercer County, PA, the wettest 29 September in the county average since 2024, tied 26th wettest of 76 (with 2008, 2001, 1982 and 1 other year) (county average from NOAA gridded data, 1951 to 2026).
The month
- August 2026 averaged 69.9°F in Mercer County, PA, the warmest August in the county average since 2022, 28th warmest of 132 (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 | 63.8 | 53.8 |
| 2025 | 82.5 | 49.1 |
| 2024 | 74.4 | 63.8 |
| 2023 | 65.9 | 51.8 |
| 2022 | 60 | 47.8 |
| 2021 | 70.4 | 47.7 |
| 2020 | 78.2 | 52.2 |
| 2019 | 80.5 | 59.1 |
| 2018 | 69.5 | 49.8 |
| 2017 | 68.4 | 42.5 |
| 2016 | 73.1 | 47.7 |
| 2015 | 71.3 | 61.1 |
| 2014 | 77.8 | 48.1 |
| 2013 | 74.4 | 44.7 |
| 2012 | 62.4 | 41.4 |
| 2011 | 71.4 | 52 |
| 2010 | 62.7 | 50.9 |
| 2009 | 62.1 | 51 |
| 2008 | 70.6 | 55.6 |
| 2007 | 69.1 | 42.2 |
| 2006 | 57.1 | 41 |
| 2005 | 74 | 44.9 |
| 2004 | 70.5 | 50.2 |
| 2003 | 59.2 | 43.7 |
| 2002 | 70.4 | 46.9 |
| 2001 | 60.6 | 40 |
| 2000 | 60.6 | 31.2 |
| 1999 | 81.5 | 59.4 |
| 1998 | 73.2 | 42.6 |
| 1997 | 70.7 | 48.6 |
| 1996 | 62.4 | 45.3 |
| 1995 | 77 | 43.9 |
| 1994 | 60.1 | 46.5 |
| 1993 | 54.4 | 40.5 |
| 1992 | 66.7 | 41.5 |
| 1991 | 61.2 | 34.1 |
| 1990 | 75.6 | 49.8 |
| 1989 | 68.8 | 36.9 |
| 1988 | 68.8 | 46.3 |
| 1987 | 78.4 | 50.5 |
| 1986 | 78.4 | 63.6 |
| 1985 | 69.4 | 40.2 |
| 1984 | 52 | 37.5 |
| 1983 | 71.1 | 44.9 |
| 1982 | 64.5 | 45.4 |
| 1981 | 57.7 | 35.9 |
| 1980 | 66.2 | 40 |
| 1979 | 62.3 | 58.3 |
| 1978 | 61.1 | 32.9 |
| 1977 | 63.5 | 40.8 |
| 1976 | 58.4 | 36.2 |
| 1975 | 67.5 | 38.4 |
| 1974 | 72.1 | 55.9 |
| 1973 | 68.5 | 62.1 |
| 1972 | 69 | 54.3 |
| 1971 | 81.6 | 63.6 |
| 1970 | 56.2 | 40.3 |
| 1969 | 59.3 | 34.4 |
| 1968 | 65 | 38.9 |
| 1967 | 49.2 | 45.1 |
| 1966 | 63.1 | 41.3 |
| 1965 | 70.6 | 40.4 |
| 1964 | 56.6 | 42 |
| 1963 | 70.8 | 47 |
| 1962 | 51.4 | 45 |
| 1961 | 62 | 32.6 |
| 1960 | 72.3 | 49.5 |
| 1959 | 85.9 | 61.6 |
| 1958 | 61.1 | 37 |
| 1957 | 64.3 | 29.2 |
| 1956 | 69.9 | 42.5 |
| 1955 | 72.6 | 43.4 |
| 1954 | 84.8 | 52.9 |
| 1953 | 79.9 | 44.5 |
| 1952 | 78.9 | 44.3 |
| 1951 | 55 | 33.9 |
Nearby
Youngstown, OH 22.1 mi, the nearest city with its own station