Weather on September 28
Allentown, PA
55 Years of Data
Avg High
72°F
Avg Low
52°F
Warmest
2020
73°F avg
Coldest
1984
47°F avg
About This Date
September 28th in Allentown, PA typically brings pleasant fall weather, with average highs around 72°F and lows near 52°F. Over 55 years of records, the warmest September 28th was in 2020 (73°F average), while the coldest was 1984 (47°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 45% of September 28th dates historically, with the wettest September 28th recording 9.73" 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 September 28th 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 | 86° | 61° | 73° | — | — |
| 2024 | 66° | 61° | 63° | 0.61" | — |
| 2023 | 62° | 43° | 52° | 0.18" | — |
| 2022 | 69° | 43° | 56° | — | — |
| 2021 | 72° | 54° | 63° | 0.1" | — |
| 2020warmest | 79° | 68° | 73° | 0.13" | — |
| 2019 | 83° | 53° | 68° | 0.03" | — |
| 2018 | 71° | 54° | 62° | 2.59" | — |
| 2017 | 76° | 52° | 64° | — | — |
| 2016 | 71° | 46° | 59° | 0.03" | — |
| 2015 | 81° | 63° | 72° | — | — |
| 2014 | 84° | 50° | 67° | — | — |
| 2013 | 74° | 50° | 62° | — | — |
| 2012 | 73° | 58° | 65° | 0.79" | — |
| 2011 | 77° | 66° | 72° | 7.67" | — |
| 2010 | 79° | 60° | 69° | 0.84" | — |
| 2009 | 72° | 50° | 61° | 0.08" | — |
| 2008 | 69° | 63° | 66° | 9.73" | — |
| 2007 | 78° | 59° | 69° | — | — |
| 2006 | 74° | 51° | 62° | 2.16" | — |
| 2005 | 77° | 42° | 60° | — | — |
| 2004 | 68° | 63° | 65° | 7.16" | — |
| 2003 | 71° | 51° | 61° | 2.67" | — |
| 2002 | 73° | 50° | 62° | 0.03" | — |
| 2001 | 64° | 40° | 52° | — | — |
| 2000 | 60° | 39° | 50° | — | — |
| 1999 | 74° | 63° | 68° | 0.2" | — |
| 1998 | 74° | 50° | 62° | — | — |
| 1997 | 72° | 44° | 58° | 0.51" | — |
| 1996 | 75° | 57° | 66° | 4.19" | — |
| 1995 | 75° | 50° | 63° | — | — |
| 1994 | 70° | 52° | 61° | 0.08" | — |
| 1993 | 64° | 49° | 56° | — | — |
| 1992 | 69° | 51° | 60° | — | — |
| 1991 | 63° | 37° | 50° | — | — |
| 1990 | 77° | 48° | 63° | — | — |
| 1989 | 65° | 35° | 50° | — | — |
| 1988 | 75° | 48° | 62° | — | — |
| 1987 | 81° | 51° | 66° | — | — |
| 1986 | 65° | 57° | 61° | — | — |
| 1985 | 70° | 50° | 60° | — | — |
| 1984coldest | 50° | 44° | 47° | 0.56" | — |
| 1983 | 75° | 50° | 63° | — | — |
| 1982 | 71° | 49° | 60° | — | — |
| 1981 | 64° | 47° | 55° | — | — |
| 1980 | 76° | 44° | 60° | — | — |
| 1979 | 72° | 55° | 63° | 0.13" | — |
| 1978 | 67° | 44° | 55° | — | — |
| 1977 | 72° | 51° | 61° | 0.25" | — |
| 1976 | 66° | 43° | 54° | — | — |
| 1975 | 72° | 49° | 60° | — | — |
| 1974 | 71° | 59° | 65° | 3.99" | — |
| 1973 | 79° | 63° | 71° | — | — |
| 1972 | 70° | 55° | 62° | — | — |
| 1971 | 67° | 60° | 63° | 0.03" | — |
55 years of data from ALLENTOWN LEHIGH VLY INTL AP