Weather on September 1
Pittsburgh, PA
55 Years of Data
Avg High
80°F
Avg Low
62°F
Warmest
1973
83°F avg
Coldest
2017
56°F avg
About This Date
September 1st in Pittsburgh, PA typically brings warm fall weather, with average highs around 80°F and lows near 62°F. Over 44 years of records, the warmest September 1st was in 1973 (83°F average), while the coldest was 2017 (56°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 32% of September 1st dates historically, with the wettest September 1st recording 5.79" of rain. The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
Planning for September 1st in Pittsburgh, PA? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Cooling Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 53° | 65° | — | — |
| 2024 | 87° | 60° | 74° | 0.3" | — |
| 2023 | 79° | 55° | 67° | — | — |
| 2022 | 82° | 61° | 71° | — | — |
| 2021 | 68° | 58° | 63° | 5.79" | — |
| 2020 | 83° | 67° | 75° | 0.08" | — |
| 2019 | 78° | 63° | 70° | 1.37" | — |
| 2018 | 86° | 67° | 76° | — | — |
| 2017coldest | 60° | 52° | 56° | — | — |
| 2016 | 77° | 62° | 70° | — | — |
| 2015 | 88° | 66° | 77° | — | — |
| 2014 | 83° | 70° | 76° | 0.2" | — |
| 2013 | 79° | 69° | 74° | — | — |
| 2012 | 88° | 71° | 79° | 0.18" | — |
| 2011 | 81° | 66° | 73° | 0.76" | — |
| 2010 | 91° | 65° | 78° | — | — |
| 2009 | 72° | 49° | 60° | — | — |
| 2008 | 84° | 58° | 71° | — | — |
| 2007 | 77° | 54° | 65° | — | — |
| 2006 | 65° | 55° | 60° | 0.63" | — |
| 2005 | 80° | 63° | 71° | 0.46" | — |
| 2004 | 78° | 57° | 68° | — | — |
| 2003 | 77° | 64° | 71° | 2.08" | — |
| 2002 | 78° | 60° | 69° | — | — |
| 2001 | 72° | 55° | 63° | — | — |
| 2000 | 87° | 68° | 78° | — | — |
| 1999 | 83° | 55° | 69° | — | — |
| 1998 | 80° | 60° | 70° | — | — |
| 1997 | 88° | 69° | 78° | — | — |
| 1996 | 87° | 62° | 75° | — | — |
| 1995 | 85° | 68° | 76° | 0.46" | — |
| 1994 | 76° | 60° | 68° | 0.64" | — |
| 1993 | 74° | 67° | 70° | — | — |
| 1992 | 77° | 57° | 67° | — | — |
| 1991 | 80° | 60° | 70° | — | — |
| 1979 | 84° | 65° | 74° | — | — |
| 1978 | 78° | 55° | 67° | — | — |
| 1977 | 91° | 67° | 79° | — | — |
| 1976 | 78° | 59° | 69° | — | — |
| 1975 | 74° | 61° | 67° | 0.43" | — |
| 1974 | 77° | 61° | 69° | 2.06" | — |
| 1973warmest | 95° | 72° | 83° | — | — |
| 1972 | 85° | 62° | 73° | — | — |
| 1971 | 82° | 66° | 74° | — | — |
44 years of data from PITTSBURGH WSO CITY