Allegheny County, PA
: September 2026 so far averaged 68.2°F in Allegheny County, PA, the warmest 1 to 29 September in the county average since 2019, 7th 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
- 64.9°F
- Coldest since 2022
- 22nd coldest of 76
- Low
- 56.7°F
- Warmest since 2024
- 12th warmest of 76
No measurable precipitation in the county average of Allegheny County, PA for 6 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 61.8 to 78.2°F
Every year as a table
Every 29 September low of the county average in Allegheny County, PA since 1951: 56.7°F in 2026; the lowest is 34.7°F, in 1957.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 64.9 | 56.7 |
| 2025 | 83.3 | 55.8 |
| 2024 | 75.7 | 65.9 |
| 2023 | 71 | 54.4 |
| 2022 | 58.7 | 43.8 |
| 2021 | 73.7 | 50.1 |
| 2020 | 79.6 | 54.7 |
| 2019 | 83.9 | 60.1 |
| 2018 | 71.3 | 51.2 |
| 2017 | 72.9 | 46.7 |
| 2016 | 75.8 | 45.9 |
| 2015 | 72.5 | 62.2 |
| 2014 | 75.9 | 50.6 |
| 2013 | 74.6 | 48.2 |
| 2012 | 64.2 | 44.3 |
| 2011 | 72.9 | 55.3 |
| 2010 | 63.2 | 54.5 |
| 2009 | 63.8 | 53.6 |
| 2008 | 72.8 | 56.4 |
| 2007 | 70.2 | 45.4 |
| 2006 | 59.6 | 42.6 |
| 2005 | 76.8 | 46 |
| 2004 | 68.8 | 53.3 |
| 2003 | 59.1 | 45.1 |
| 2002 | 71.5 | 49.9 |
| 2001 | 62 | 44.2 |
| 2000 | 64.2 | 36.1 |
| 1999 | 82.4 | 60.5 |
| 1998 | 76 | 46.9 |
| 1997 | 69.9 | 50.8 |
| 1996 | 66.9 | 47.8 |
| 1995 | 78 | 48.5 |
| 1994 | 62.8 | 48.3 |
| 1993 | 57.3 | 42 |
| 1992 | 66.5 | 43 |
| 1991 | 66.5 | 38.1 |
| 1990 | 76.4 | 50 |
| 1989 | 71 | 39.8 |
| 1988 | 75.5 | 50.7 |
| 1987 | 80 | 50.3 |
| 1986 | 81.8 | 64.2 |
| 1985 | 72.2 | 41 |
| 1984 | 52.4 | 40.1 |
| 1983 | 72.4 | 46 |
| 1982 | 65.5 | 49 |
| 1981 | 60.5 | 36.2 |
| 1980 | 71.5 | 42.8 |
| 1979 | 65.3 | 60.8 |
| 1978 | 65 | 35.9 |
| 1977 | 65.8 | 43.6 |
| 1976 | 59.8 | 43.2 |
| 1975 | 69.3 | 41.1 |
| 1974 | 75.2 | 57.4 |
| 1973 | 76.3 | 64.7 |
| 1972 | 74 | 60.5 |
| 1971 | 83.8 | 61.7 |
| 1970 | 59.3 | 41.5 |
| 1969 | 62.2 | 38.3 |
| 1968 | 68.2 | 40.9 |
| 1967 | 54.9 | 49 |
| 1966 | 64.5 | 44.2 |
| 1965 | 71.2 | 42.2 |
| 1964 | 54.1 | 48.7 |
| 1963 | 75.9 | 50 |
| 1962 | 53.7 | 47 |
| 1961 | 65.6 | 35 |
| 1960 | 72.1 | 54.4 |
| 1959 | 87.9 | 61.4 |
| 1958 | 64.2 | 38.1 |
| 1957 | 66 | 34.7 |
| 1956 | 70.2 | 47.7 |
| 1955 | 75.3 | 48.4 |
| 1954 | 85.7 | 54.8 |
| 1953 | 82.5 | 47.4 |
| 1952 | 81.3 | 45.6 |
| 1951 | 58.1 | 35.5 |
The month
August 2026 averaged 71.9°F in Allegheny County, PA, the warmest August in the county average since 2024, tied 45th warmest of 132 (with 1949) (county average from NOAA's monthly county data, 1895 to 2026).
The month in words
- Tuesday 29 September 2026: a high of 64.9°F averaged over Allegheny County, PA, the coldest 29 September day in the county average since 2022, 22nd coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 56.7°F averaged over Allegheny County, PA, the warmest 29 September night in the county average since 2024, 12th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Pittsburgh, PA 12.3 mi, the nearest city with its own station