Weather on September 26
Allentown, PA
55 Years of Data
Avg High
72°F
Avg Low
52°F
Warmest
2017
77°F avg
Coldest
2001
50°F avg
About This Date
September 26th 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 26th was in 2017 (77°F average), while the coldest was 2001 (50°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 47% of September 26th dates historically, with the wettest September 26th recording 5.08" of rain. The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
Planning for September 26th in Allentown, PA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 60° | 70° | — | — |
| 2024 | 74° | 63° | 68° | 0.28" | — |
| 2023 | 60° | 54° | 57° | 0.05" | — |
| 2022 | 72° | 50° | 61° | — | — |
| 2021 | 71° | 52° | 61° | — | — |
| 2020 | 72° | 52° | 62° | 0.23" | — |
| 2019 | 80° | 51° | 66° | 0.36" | — |
| 2018 | 83° | 64° | 73° | 1.65" | — |
| 2017warmest | 89° | 64° | 77° | — | — |
| 2016 | 70° | 42° | 56° | 0.05" | — |
| 2015 | 73° | 53° | 63° | — | — |
| 2014 | 78° | 46° | 62° | — | — |
| 2013 | 74° | 43° | 58° | — | — |
| 2012 | 75° | 60° | 68° | — | — |
| 2011 | 82° | 64° | 73° | — | — |
| 2010 | 71° | 55° | 63° | — | — |
| 2009 | 65° | 45° | 55° | 1.09" | — |
| 2008 | 65° | 55° | 60° | 0.58" | — |
| 2007 | 90° | 59° | 74° | — | — |
| 2006 | 71° | 46° | 59° | — | — |
| 2005 | 76° | 65° | 70° | 0.3" | — |
| 2004 | 76° | 55° | 65° | — | — |
| 2003 | 70° | 59° | 64° | — | — |
| 2002 | 62° | 55° | 59° | — | — |
| 2001coldest | 63° | 38° | 50° | — | — |
| 2000 | 55° | 46° | 51° | 1.37" | — |
| 1999 | 72° | 46° | 59° | — | — |
| 1998 | 79° | 56° | 67° | — | — |
| 1997 | 70° | 48° | 59° | — | — |
| 1996 | 67° | 39° | 53° | — | — |
| 1995 | 63° | 54° | 58° | 0.36" | — |
| 1994 | 71° | 66° | 69° | 1.27" | — |
| 1993 | 76° | 55° | 65° | 2.79" | — |
| 1992 | 62° | 54° | 58° | 0.76" | — |
| 1991 | 70° | 51° | 60° | 0.28" | — |
| 1990 | 66° | 46° | 56° | 0.08" | — |
| 1989 | 70° | 51° | 60° | 1.85" | — |
| 1988 | 73° | 48° | 61° | — | — |
| 1987 | 70° | 39° | 54° | — | — |
| 1986 | 85° | 63° | 74° | 0.38" | — |
| 1985 | 68° | 48° | 58° | 5.08" | — |
| 1984 | 71° | 47° | 59° | 0.05" | — |
| 1983 | 69° | 41° | 55° | — | — |
| 1982 | 68° | 47° | 57° | 0.18" | — |
| 1981 | 76° | 54° | 65° | — | — |
| 1980 | 76° | 52° | 64° | 0.08" | — |
| 1979 | 78° | 50° | 64° | — | — |
| 1978 | 64° | 42° | 53° | — | — |
| 1977 | 73° | 54° | 63° | 0.38" | — |
| 1976 | 69° | 50° | 60° | 2.01" | — |
| 1975 | 70° | 59° | 64° | 0.53" | — |
| 1974 | 70° | 45° | 57° | — | — |
| 1973 | 71° | 48° | 60° | — | — |
| 1972 | 85° | 63° | 74° | — | — |
| 1971 | 58° | 53° | 55° | 0.36" | — |
55 years of data from ALLENTOWN LEHIGH VLY INTL AP