Weather on September 4
Pittsburgh, PA
55 Years of Data
Avg High
80°F
Avg Low
61°F
Warmest
1973
81°F avg
Coldest
1974
55°F avg
About This Date
September 4th in Pittsburgh, PA typically brings warm fall weather, with average highs around 80°F and lows near 61°F. Over 44 years of records, the warmest September 4th was in 1973 (81°F average), while the coldest was 1974 (55°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 20% of September 4th dates historically, with the wettest September 4th recording 1.52" of rain. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for September 4th in Pittsburgh, PA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 70° | 57° | 63° | 1.52" | — |
| 2024 | 80° | 53° | 67° | — | — |
| 2023 | 89° | 71° | 80° | — | — |
| 2022 | 78° | 67° | 72° | 0.84" | — |
| 2021 | 76° | 58° | 67° | — | — |
| 2020 | 77° | 59° | 68° | — | — |
| 2019 | 82° | 59° | 71° | — | — |
| 2018 | 92° | 69° | 80° | — | — |
| 2017 | 80° | 57° | 69° | — | — |
| 2016 | 82° | 57° | 70° | — | — |
| 2015 | 89° | 67° | 78° | — | — |
| 2014 | 86° | 62° | 74° | — | — |
| 2013 | 75° | 52° | 63° | — | — |
| 2012 | 87° | 72° | 79° | 0.41" | — |
| 2011 | 82° | 67° | 74° | 1.3" | — |
| 2010 | 71° | 57° | 64° | — | — |
| 2009 | 80° | 55° | 68° | — | — |
| 2008 | 88° | 61° | 74° | — | — |
| 2007 | 85° | 62° | 73° | — | — |
| 2006 | 72° | 53° | 62° | — | — |
| 2005 | 75° | 56° | 65° | — | — |
| 2004 | 81° | 65° | 73° | — | — |
| 2003 | 79° | 59° | 69° | 0.89" | — |
| 2002 | 80° | 63° | 71° | 0.03" | — |
| 2001 | 78° | 61° | 69° | — | — |
| 2000 | 79° | 59° | 69° | — | — |
| 1999 | 84° | 65° | 74° | 0.25" | — |
| 1998 | 84° | 60° | 72° | — | — |
| 1997 | 67° | 50° | 58° | — | — |
| 1996 | 85° | 70° | 77° | — | — |
| 1995 | 85° | 65° | 75° | — | — |
| 1994 | 72° | 60° | 66° | — | — |
| 1993 | 78° | 66° | 72° | 0.46" | — |
| 1992 | 83° | 69° | 76° | — | — |
| 1991 | 87° | 68° | 78° | — | — |
| 1979 | 90° | 67° | 78° | — | — |
| 1978 | 76° | 61° | 68° | — | — |
| 1977 | 83° | 57° | 70° | — | — |
| 1976 | 81° | 61° | 71° | 0.05" | — |
| 1975 | 76° | 62° | 69° | — | — |
| 1974coldest | 64° | 47° | 55° | — | — |
| 1973warmest | 91° | 71° | 81° | — | — |
| 1972 | 71° | 57° | 64° | — | — |
| 1971 | 85° | 68° | 76° | — | — |
44 years of data from PITTSBURGH WSO CITY