Weather on August 18
Pittsburgh, PA
55 Years of Data
Avg High
81°F
Avg Low
63°F
Warmest
2002
79°F avg
Coldest
2000
63°F avg
About This Date
August 18th in Pittsburgh, PA typically brings warm summer weather, with average highs around 81°F and lows near 63°F. Over 38 years of records, the warmest August 18th was in 2002 (79°F average), while the coldest was 2000 (63°F) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 34% of August 18th dates historically, with the wettest August 18th recording 3.84" of rain. The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Pittsburgh, PA? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 65° | 73° | — | — |
| 2024 | 81° | 67° | 74° | 0.08" | — |
| 2023 | 73° | 61° | 67° | — | — |
| 2022 | 80° | 57° | 69° | — | — |
| 2021 | 77° | 70° | 73° | 2.77" | — |
| 2020 | 83° | 63° | 73° | — | — |
| 2019 | 87° | 68° | 78° | — | — |
| 2018 | 83° | 68° | 75° | — | — |
| 2017 | 84° | 71° | 78° | 3.84" | — |
| 2016 | 83° | 70° | 76° | — | — |
| 2015 | 79° | 67° | 73° | 2.77" | — |
| 2014 | 83° | 64° | 73° | 0.13" | — |
| 2013 | 71° | 62° | 67° | 0.05" | — |
| 2012 | 77° | 59° | 68° | — | — |
| 2011 | 84° | 63° | 73° | — | — |
| 2010 | 83° | 63° | 73° | — | — |
| 2009 | 84° | 70° | 77° | 0.03" | — |
| 2008 | 83° | 59° | 71° | — | — |
| 2007 | 72° | 54° | 63° | — | — |
| 2006 | 83° | 67° | 75° | — | — |
| 2005 | 86° | 62° | 74° | — | — |
| 2004 | 80° | 59° | 70° | 0.33" | — |
| 2003 | 81° | 60° | 70° | — | — |
| 2002warmest | 88° | 71° | 79° | 0.28" | — |
| 2001 | 79° | 61° | 70° | — | — |
| 2000coldest | 69° | 57° | 63° | 0.41" | — |
| 1999 | 75° | 63° | 69° | — | — |
| 1993 | 87° | 70° | 78° | — | — |
| 1992 | 81° | 60° | 70° | — | — |
| 1979 | 72° | 60° | 66° | 0.74" | — |
| 1978 | 89° | 63° | 76° | — | — |
| 1977 | 71° | 59° | 65° | — | — |
| 1976 | 83° | 57° | 70° | — | — |
| 1975 | 82° | 67° | 74° | — | — |
| 1974 | 80° | 63° | 71° | — | — |
| 1973 | 80° | 64° | 72° | 0.43" | — |
| 1972 | 86° | 68° | 77° | 0.13" | — |
| 1971 | 87° | 58° | 72° | — | — |
38 years of data from PITTSBURGH WSO CITY