Weather on May 31
Pittsburgh, PA
55 Years of Data
Avg High
78°F
Avg Low
57°F
Warmest
2011
79°F avg
Coldest
2025
50°F avg
About This Date
May 31st in Pittsburgh, PA typically brings pleasant spring weather, with average highs around 78°F and lows near 57°F. Over 43 years of records, the warmest May 31st was in 2011 (79°F average), while the coldest was 2025 (50°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 42% of May 31st dates historically, with the wettest May 31st recording 2.69" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 31st in Pittsburgh, PA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025coldest | 56° | 45° | 50° | 0.03" | — |
| 2024 | 74° | 49° | 61° | — | — |
| 2023 | 84° | 56° | 70° | — | — |
| 2022 | 89° | 65° | 77° | — | — |
| 2021 | 71° | 47° | 59° | — | — |
| 2020 | 64° | 48° | 56° | — | — |
| 2019 | 76° | 58° | 67° | — | — |
| 2018 | 81° | 72° | 76° | 0.2" | — |
| 2017 | 77° | 56° | 66° | 0.53" | — |
| 2016 | 85° | 60° | 72° | — | — |
| 2015 | 83° | 59° | 71° | 0.94" | — |
| 2014 | 79° | 59° | 69° | — | — |
| 2013 | 88° | 66° | 77° | — | — |
| 2012 | 77° | 56° | 66° | — | — |
| 2011warmest | 90° | 69° | 79° | — | — |
| 2010 | 83° | 65° | 74° | 1.12" | — |
| 2009 | 68° | 50° | 59° | — | — |
| 2008 | 81° | 64° | 72° | 1.12" | — |
| 2007 | 87° | 62° | 75° | 0.3" | — |
| 2006 | 89° | 67° | 78° | — | — |
| 2005 | 74° | 46° | 60° | 0.03" | — |
| 2004 | 75° | 59° | 67° | 0.58" | — |
| 2003 | 66° | 50° | 58° | 1.5" | — |
| 2002 | 84° | 64° | 74° | 1.14" | — |
| 2001 | 67° | 39° | 53° | — | — |
| 2000 | 83° | 52° | 67° | — | — |
| 1999 | 88° | 65° | 76° | — | — |
| 1998 | 86° | 64° | 75° | 2.11" | — |
| 1997 | 70° | 50° | 60° | 0.94" | — |
| 1996 | 81° | 38° | 59° | — | — |
| 1995 | 72° | 55° | 63° | 0.08" | — |
| 1994 | 83° | 55° | 69° | — | — |
| 1993 | 69° | 51° | 60° | 2.69" | — |
| 1992 | 70° | 55° | 62° | 0.61" | — |
| 1979 | 75° | 56° | 65° | — | — |
| 1978 | 84° | 67° | 75° | — | — |
| 1977 | 87° | 64° | 76° | — | — |
| 1976 | 77° | 64° | 71° | 0.91" | — |
| 1975 | 83° | 65° | 74° | — | — |
| 1974 | 77° | 65° | 71° | 0.3" | — |
| 1973 | 67° | 55° | 61° | — | — |
| 1972 | 70° | 48° | 59° | — | — |
| 1971 | 80° | 51° | 66° | — | — |
43 years of data from PITTSBURGH WSO CITY