Weather on September 14
Allentown, PA
55 Years of Data
Avg High
77°F
Avg Low
57°F
Warmest
2008
80°F avg
Coldest
1975
52°F avg
About This Date
September 14th in Allentown, PA typically brings pleasant fall weather, with average highs around 77°F and lows near 57°F. Over 55 years of records, the warmest September 14th was in 2008 (80°F average), while the coldest was 1975 (52°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 29% of September 14th dates historically, with the wettest September 14th recording 8.23" of rain. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for September 14th in Allentown, PA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 55° | 69° | — | — |
| 2024 | 84° | 53° | 69° | — | — |
| 2023 | 74° | 53° | 63° | — | — |
| 2022 | 77° | 53° | 65° | — | — |
| 2021 | 84° | 61° | 72° | — | — |
| 2020 | 74° | 51° | 62° | — | — |
| 2019 | 73° | 63° | 68° | 0.38" | — |
| 2018 | 77° | 67° | 72° | — | — |
| 2017 | 81° | 63° | 72° | 0.13" | — |
| 2016 | 91° | 59° | 75° | 0.08" | — |
| 2015 | 74° | 50° | 62° | — | — |
| 2014 | 69° | 47° | 58° | — | — |
| 2013 | 61° | 43° | 52° | — | — |
| 2012 | 80° | 50° | 65° | — | — |
| 2011 | 84° | 60° | 72° | 0.79" | — |
| 2010 | 75° | 51° | 63° | — | — |
| 2009 | 77° | 54° | 65° | — | — |
| 2008warmest | 91° | 69° | 80° | — | — |
| 2007 | 76° | 60° | 68° | — | — |
| 2006 | 67° | 61° | 64° | 5.44" | — |
| 2005 | 85° | 55° | 70° | 0.99" | — |
| 2004 | 74° | 61° | 67° | — | — |
| 2003 | 84° | 71° | 78° | 0.43" | — |
| 2002 | 85° | 54° | 69° | — | — |
| 2001 | 67° | 48° | 57° | 0.53" | — |
| 2000 | 77° | 48° | 63° | 1.57" | — |
| 1999 | 77° | 59° | 68° | — | — |
| 1998 | 84° | 65° | 74° | — | — |
| 1997 | 75° | 55° | 65° | — | — |
| 1996 | 69° | 47° | 58° | — | — |
| 1995 | 87° | 60° | 74° | — | — |
| 1994 | 82° | 66° | 74° | — | — |
| 1993 | 84° | 56° | 70° | — | — |
| 1992 | 75° | 46° | 61° | — | — |
| 1991 | 79° | 68° | 73° | — | — |
| 1990 | 75° | 59° | 67° | 0.1" | — |
| 1989 | 81° | 68° | 74° | — | — |
| 1988 | 73° | 51° | 62° | — | — |
| 1987 | 79° | 54° | 66° | — | — |
| 1986 | 68° | 48° | 58° | — | — |
| 1985 | 69° | 43° | 56° | — | — |
| 1984 | 78° | 67° | 72° | — | — |
| 1983 | 72° | 54° | 63° | — | — |
| 1982 | 80° | 63° | 71° | — | — |
| 1981 | 88° | 59° | 73° | — | — |
| 1980 | 81° | 68° | 74° | 1.5" | — |
| 1979 | 82° | 67° | 74° | 1.24" | — |
| 1978 | 69° | 49° | 59° | — | — |
| 1977 | 77° | 58° | 67° | 0.18" | — |
| 1976 | 89° | 53° | 71° | — | — |
| 1975coldest | 63° | 42° | 52° | — | — |
| 1974 | 69° | 50° | 60° | 0.1" | — |
| 1973 | 68° | 60° | 64° | 8.23" | — |
| 1972 | 84° | 58° | 71° | — | — |
| 1971 | 72° | 63° | 67° | 0.61" | — |
55 years of data from ALLENTOWN LEHIGH VLY INTL AP