Weather on August 31
Allentown, PA
55 Years of Data
Avg High
81°F
Avg Low
60°F
Warmest
1973
82°F avg
Coldest
1976
58°F avg
About This Date
August 31st in Allentown, PA typically brings warm summer weather, with average highs around 81°F and lows near 60°F. Over 55 years of records, the warmest August 31st was in 1973 (82°F average), while the coldest was 1976 (58°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 29% of August 31st dates historically, with the wettest August 31st recording 1.63" 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 August 31st in Allentown, PA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 45° | 62° | — | — |
| 2024 | 80° | 65° | 72° | — | — |
| 2023 | 76° | 58° | 67° | — | — |
| 2022 | 81° | 63° | 72° | — | — |
| 2021 | 83° | 68° | 75° | — | — |
| 2020 | 77° | 55° | 66° | 0.03" | — |
| 2019 | 83° | 63° | 73° | — | — |
| 2018 | 75° | 69° | 72° | 0.56" | — |
| 2017 | 82° | 56° | 69° | — | — |
| 2016 | 88° | 61° | 74° | 0.15" | — |
| 2015 | 90° | 68° | 79° | — | — |
| 2014 | 88° | 72° | 80° | 0.3" | — |
| 2013 | 85° | 69° | 77° | — | — |
| 2012 | 90° | 55° | 72° | — | — |
| 2011 | 84° | 54° | 69° | — | — |
| 2010 | 94° | 63° | 78° | — | — |
| 2009 | 72° | 53° | 62° | — | — |
| 2008 | 83° | 53° | 68° | — | — |
| 2007 | 80° | 61° | 70° | — | — |
| 2006 | 72° | 58° | 65° | — | — |
| 2005 | 87° | 65° | 76° | 0.66" | — |
| 2004 | 78° | 60° | 69° | 0.03" | — |
| 2003 | 76° | 54° | 65° | — | — |
| 2002 | 79° | 52° | 65° | — | — |
| 2001 | 87° | 68° | 78° | 0.66" | — |
| 2000 | 84° | 70° | 77° | 0.58" | — |
| 1999 | 76° | 51° | 63° | — | — |
| 1998 | 82° | 61° | 71° | — | — |
| 1997 | 81° | 55° | 68° | 0.18" | — |
| 1996 | 83° | 53° | 68° | — | — |
| 1995 | 90° | 53° | 71° | — | — |
| 1994 | 76° | 60° | 68° | — | — |
| 1993 | 88° | 70° | 79° | — | — |
| 1992 | 79° | 59° | 69° | — | — |
| 1991 | 90° | 62° | 76° | 0.03" | — |
| 1990 | 84° | 56° | 70° | — | — |
| 1989 | 81° | 61° | 71° | — | — |
| 1988 | 80° | 54° | 67° | — | — |
| 1987 | 77° | 51° | 64° | 1.14" | — |
| 1986 | 75° | 44° | 60° | — | — |
| 1985 | 68° | 58° | 63° | — | — |
| 1984 | 82° | 62° | 72° | 0.38" | — |
| 1983 | 76° | 68° | 72° | 0.05" | — |
| 1982 | 79° | 52° | 65° | — | — |
| 1981 | 73° | 65° | 69° | 0.05" | — |
| 1980 | 92° | 71° | 81° | 0.18" | — |
| 1979 | 84° | 65° | 74° | — | — |
| 1978 | 72° | 63° | 67° | 1.63" | — |
| 1977 | 78° | 70° | 74° | — | — |
| 1976coldest | 74° | 43° | 58° | — | — |
| 1975 | 64° | 58° | 61° | — | — |
| 1974 | 81° | 65° | 73° | — | — |
| 1973warmest | 95° | 69° | 82° | — | — |
| 1972 | 85° | 57° | 71° | — | — |
| 1971 | 76° | 60° | 68° | — | — |
55 years of data from ALLENTOWN LEHIGH VLY INTL AP