Weather on May 9
Pittsburgh, PA
55 Years of Data
Avg High
70°F
Avg Low
50°F
Warmest
1979
78°F avg
Coldest
2020
36°F avg
About This Date
May 9th in Pittsburgh, PA typically brings pleasant spring weather, with average highs around 70°F and lows near 50°F. Over 43 years of records, the warmest May 9th was in 1979 (78°F average), while the coldest was 2020 (36°F) — a 42°F range across recorded history. Rain or other precipitation has occurred on about 44% of May 9th dates historically, with the wettest May 9th recording 2.49" of rain. The last decade has been 9.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 9.1°F cooler on this date compared to 20-30 years ago.
Planning for May 9th in Pittsburgh, PA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 61° | 44° | 52° | — | — |
| 2024 | 69° | 52° | 60° | 1.14" | — |
| 2023 | 74° | 50° | 62° | 0.18" | — |
| 2022 | 73° | 45° | 59° | — | — |
| 2021 | 46° | 39° | 43° | 2.49" | — |
| 2020coldest | 43° | 28° | 36° | — | — |
| 2019 | 81° | 61° | 71° | 1.04" | — |
| 2018 | 80° | 55° | 68° | — | — |
| 2017 | 64° | 37° | 51° | — | — |
| 2016 | 56° | 46° | 51° | — | — |
| 2015 | 86° | 63° | 74° | — | — |
| 2014 | 84° | 65° | 74° | — | — |
| 2013 | 78° | 56° | 67° | — | — |
| 2012 | 66° | 51° | 59° | 0.08" | — |
| 2011 | 71° | 44° | 58° | — | — |
| 2010 | 52° | 38° | 45° | 0.03" | — |
| 2009 | 74° | 52° | 63° | 0.03" | — |
| 2008 | 65° | 53° | 59° | 1.65" | — |
| 2007 | 84° | 53° | 69° | — | — |
| 2006 | 70° | 50° | 60° | — | — |
| 2005 | 78° | 44° | 61° | — | — |
| 2004 | 83° | 62° | 72° | — | — |
| 2003 | 66° | 55° | 61° | 2.24" | — |
| 2002 | 78° | 61° | 69° | 0.23" | — |
| 2001 | 74° | 50° | 62° | — | — |
| 2000 | 82° | 70° | 76° | — | — |
| 1999 | 65° | 51° | 58° | 0.15" | — |
| 1998 | 75° | 60° | 68° | 0.15" | — |
| 1997 | 69° | 46° | 58° | 0.15" | — |
| 1996 | 74° | 44° | 59° | 0.05" | — |
| 1995 | 70° | 40° | 55° | — | — |
| 1994 | 66° | 45° | 55° | — | — |
| 1993 | 89° | 55° | 72° | — | — |
| 1992 | 54° | 50° | 52° | 1.4" | — |
| 1979warmest | 90° | 67° | 78° | — | — |
| 1978 | 69° | 56° | 62° | 0.2" | — |
| 1977 | 49° | 37° | 43° | — | — |
| 1976 | 68° | 36° | 52° | — | — |
| 1975 | 79° | 57° | 68° | — | — |
| 1974 | 64° | 47° | 55° | 0.15" | — |
| 1973 | 72° | 58° | 65° | 0.08" | — |
| 1972 | 57° | 45° | 51° | 1.45" | — |
| 1971 | 70° | 43° | 56° | — | — |
43 years of data from PITTSBURGH WSO CITY