Weather on September 22
Allentown, PA
55 Years of Data
Avg High
74°F
Avg Low
53°F
Warmest
1980
82°F avg
Coldest
1997
51°F avg
About This Date
September 22nd in Allentown, PA typically brings pleasant fall weather, with average highs around 74°F and lows near 53°F. Over 55 years of records, the warmest September 22nd was in 1980 (82°F average), while the coldest was 1997 (51°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 44% of September 22nd dates historically, with the wettest September 22nd recording 2.54" of rain. The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
Planning for September 22nd in Allentown, PA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 51° | 62° | — | — |
| 2024 | 78° | 56° | 67° | — | — |
| 2023 | 72° | 50° | 61° | — | — |
| 2022 | 70° | 53° | 61° | 0.23" | — |
| 2021 | 82° | 69° | 76° | 0.05" | — |
| 2020 | 73° | 36° | 54° | — | — |
| 2019 | 90° | 55° | 72° | — | — |
| 2018 | 75° | 58° | 66° | — | — |
| 2017 | 85° | 61° | 73° | — | — |
| 2016 | 87° | 52° | 69° | — | — |
| 2015 | 72° | 54° | 63° | — | — |
| 2014 | 69° | 46° | 58° | — | — |
| 2013 | 67° | 53° | 60° | — | — |
| 2012 | 80° | 59° | 70° | 0.43" | — |
| 2011 | 80° | 66° | 73° | 0.28" | — |
| 2010 | 88° | 50° | 69° | 1.12" | — |
| 2009 | 74° | 53° | 63° | — | — |
| 2008 | 73° | 55° | 64° | — | — |
| 2007 | 81° | 58° | 69° | 0.33" | — |
| 2006 | 70° | 42° | 56° | — | — |
| 2005 | 86° | 50° | 68° | — | — |
| 2004 | 82° | 49° | 65° | — | — |
| 2003 | 74° | 63° | 68° | 0.46" | — |
| 2002 | 83° | 69° | 76° | — | — |
| 2001 | 80° | 55° | 68° | — | — |
| 2000 | 69° | 43° | 56° | — | — |
| 1999 | 58° | 45° | 51° | 0.43" | — |
| 1998 | 75° | 56° | 65° | 0.15" | — |
| 1997coldest | 67° | 36° | 51° | — | — |
| 1996 | 69° | 52° | 60° | 1.52" | — |
| 1995 | 71° | 55° | 63° | 1.45" | — |
| 1994 | 66° | 57° | 62° | 1.42" | — |
| 1993 | 67° | 52° | 59° | — | — |
| 1992 | 84° | 64° | 74° | 1.78" | — |
| 1991 | 69° | 38° | 53° | — | — |
| 1990 | 63° | 52° | 57° | 2.54" | — |
| 1989 | 82° | 71° | 77° | 0.48" | — |
| 1988 | 69° | 59° | 64° | — | — |
| 1987 | 73° | 51° | 62° | 0.05" | — |
| 1986 | 65° | 54° | 59° | 0.1" | — |
| 1985 | 79° | 58° | 68° | — | — |
| 1984 | 77° | 45° | 61° | — | — |
| 1983 | 63° | 46° | 54° | — | — |
| 1982 | 59° | 55° | 57° | 0.81" | — |
| 1981 | 73° | 53° | 63° | 0.18" | — |
| 1980warmest | 93° | 72° | 82° | — | — |
| 1979 | 68° | 60° | 64° | 0.43" | — |
| 1978 | 74° | 59° | 66° | 0.56" | — |
| 1977 | 60° | 56° | 58° | 0.08" | — |
| 1976 | 63° | 47° | 55° | — | — |
| 1975 | 69° | 49° | 59° | 0.56" | — |
| 1974 | 65° | 45° | 55° | 0.13" | — |
| 1973 | 71° | 50° | 61° | — | — |
| 1972 | 73° | 48° | 61° | — | — |
| 1971 | 69° | 45° | 57° | — | — |
55 years of data from ALLENTOWN LEHIGH VLY INTL AP