Weather on September 30
Allentown, PA
55 Years of Data
Avg High
69°F
Avg Low
49°F
Warmest
1986
75°F avg
Coldest
1993
44°F avg
About This Date
September 30th in Allentown, PA typically brings mild fall weather, with average highs around 69°F and lows near 49°F. Over 55 years of records, the warmest September 30th was in 1986 (75°F average), while the coldest was 1993 (44°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 35% of September 30th dates historically, with the wettest September 30th recording 14.55" of rain. The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
Planning for September 30th in Allentown, PA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 57° | 69° | — | — |
| 2024 | 72° | 59° | 65° | — | — |
| 2023 | 71° | 56° | 63° | — | — |
| 2022 | 61° | 42° | 51° | — | — |
| 2021 | 66° | 48° | 57° | — | — |
| 2020 | 69° | 54° | 61° | 0.81" | — |
| 2019 | 69° | 57° | 63° | 0.03" | — |
| 2018 | 73° | 49° | 61° | — | — |
| 2017 | 63° | 47° | 55° | — | — |
| 2016 | 59° | 52° | 55° | 4.14" | — |
| 2015 | 78° | 61° | 69° | 3.4" | — |
| 2014 | 80° | 56° | 68° | — | — |
| 2013 | 73° | 49° | 61° | — | — |
| 2012 | 66° | 46° | 56° | 0.13" | — |
| 2011 | 73° | 52° | 62° | — | — |
| 2010 | 77° | 62° | 70° | 14.55" | — |
| 2009 | 59° | 40° | 49° | 0.13" | — |
| 2008 | 71° | 46° | 59° | 0.23" | — |
| 2007 | 75° | 43° | 59° | — | — |
| 2006 | 59° | 38° | 48° | 0.03" | — |
| 2005 | 68° | 40° | 54° | — | — |
| 2004 | 70° | 50° | 60° | 0.48" | — |
| 2003 | 64° | 41° | 53° | — | — |
| 2002 | 74° | 50° | 62° | — | — |
| 2001 | 59° | 42° | 51° | 0.03" | — |
| 2000 | 66° | 33° | 50° | — | — |
| 1999 | 68° | 45° | 56° | 3.61" | — |
| 1998 | 73° | 48° | 61° | — | — |
| 1997 | 69° | 53° | 61° | 0.03" | — |
| 1996 | 71° | 45° | 58° | — | — |
| 1995 | 69° | 42° | 56° | — | — |
| 1994 | 67° | 50° | 58° | — | — |
| 1993coldest | 53° | 36° | 44° | — | — |
| 1992 | 53° | 38° | 45° | — | — |
| 1991 | 63° | 38° | 50° | — | — |
| 1990 | 74° | 55° | 64° | 0.1" | — |
| 1989 | 71° | 48° | 60° | — | — |
| 1988 | 70° | 54° | 62° | — | — |
| 1987 | 70° | 54° | 62° | 0.2" | — |
| 1986warmest | 87° | 62° | 75° | — | — |
| 1985 | 74° | 47° | 60° | — | — |
| 1984 | 66° | 39° | 53° | — | — |
| 1983 | 60° | 52° | 56° | 0.03" | — |
| 1982 | 66° | 57° | 62° | — | — |
| 1981 | 64° | 42° | 53° | — | — |
| 1980 | 75° | 57° | 66° | — | — |
| 1979 | 67° | 61° | 64° | 0.05" | — |
| 1978 | 70° | 40° | 55° | — | — |
| 1977 | 74° | 55° | 64° | — | — |
| 1976 | 57° | 48° | 53° | 0.33" | — |
| 1975 | 73° | 51° | 62° | — | — |
| 1974 | 63° | 46° | 54° | — | — |
| 1973 | 70° | 48° | 59° | — | — |
| 1972 | 70° | 46° | 58° | 0.64" | — |
| 1971 | 75° | 59° | 67° | — | — |
55 years of data from ALLENTOWN LEHIGH VLY INTL AP