Weather on September 2
Allentown, PA
55 Years of Data
Avg High
80°F
Avg Low
59°F
Warmest
1980
86°F avg
Coldest
2017
55°F avg
About This Date
September 2nd in Allentown, PA typically brings warm fall weather, with average highs around 80°F and lows near 59°F. Over 55 years of records, the warmest September 2nd was in 1980 (86°F average), while the coldest was 2017 (55°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 33% of September 2nd dates historically, with the wettest September 2nd recording 4.14" of rain. The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
Planning for September 2nd in Allentown, PA? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 49° | 63° | — | — |
| 2024 | 77° | 53° | 65° | — | — |
| 2023 | 80° | 49° | 64° | — | — |
| 2022 | 81° | 51° | 66° | — | — |
| 2021 | 74° | 55° | 64° | — | — |
| 2020 | 81° | 70° | 75° | 1.19" | — |
| 2019 | 82° | 66° | 74° | 1.12" | — |
| 2018 | 84° | 69° | 77° | 0.08" | — |
| 2017coldest | 65° | 46° | 55° | 1.57" | — |
| 2016 | 81° | 56° | 68° | — | — |
| 2015 | 92° | 63° | 77° | — | — |
| 2014 | 91° | 67° | 79° | — | — |
| 2013 | 83° | 69° | 76° | 1.73" | — |
| 2012 | 81° | 65° | 73° | 0.05" | — |
| 2011 | 77° | 64° | 71° | — | — |
| 2010 | 96° | 64° | 80° | — | — |
| 2009 | 77° | 48° | 63° | — | — |
| 2008 | 90° | 54° | 72° | — | — |
| 2007 | 79° | 49° | 64° | — | — |
| 2006 | 64° | 57° | 61° | 4.14" | — |
| 2005 | 86° | 57° | 72° | — | — |
| 2004 | 80° | 55° | 68° | — | — |
| 2003 | 65° | 61° | 63° | 1.12" | — |
| 2002 | 74° | 61° | 67° | — | — |
| 2001 | 73° | 44° | 59° | — | — |
| 2000 | 86° | 71° | 79° | — | — |
| 1999 | 82° | 54° | 68° | — | — |
| 1998 | 79° | 57° | 68° | 1.96" | — |
| 1997 | 84° | 63° | 73° | — | — |
| 1996 | 88° | 55° | 71° | — | — |
| 1995 | 79° | 58° | 68° | — | — |
| 1994 | 73° | 53° | 63° | — | — |
| 1993 | 76° | 72° | 74° | — | — |
| 1992 | 75° | 50° | 63° | — | — |
| 1991 | 75° | 46° | 61° | — | — |
| 1990 | 87° | 64° | 76° | 0.05" | — |
| 1989 | 77° | 59° | 68° | — | — |
| 1988 | 79° | 51° | 65° | — | — |
| 1987 | 77° | 47° | 62° | 0.03" | — |
| 1986 | 72° | 58° | 65° | 0.05" | — |
| 1985 | 81° | 65° | 73° | — | — |
| 1984 | 80° | 57° | 69° | — | — |
| 1983 | 85° | 57° | 71° | — | — |
| 1982 | 86° | 66° | 76° | 0.74" | — |
| 1981 | 72° | 65° | 68° | — | — |
| 1980warmest | 99° | 74° | 86° | 0.33" | — |
| 1979 | 83° | 68° | 75° | 0.1" | — |
| 1978 | 80° | 55° | 68° | — | — |
| 1977 | 90° | 66° | 78° | 0.53" | — |
| 1976 | 68° | 54° | 61° | 0.38" | — |
| 1975 | 73° | 58° | 65° | — | — |
| 1974 | 71° | 65° | 68° | — | — |
| 1973 | 91° | 69° | 80° | — | — |
| 1972 | 75° | 63° | 69° | 0.13" | — |
| 1971 | 74° | 60° | 67° | — | — |
55 years of data from ALLENTOWN LEHIGH VLY INTL AP