Weather on September 16
Allentown, PA
55 Years of Data
About This Date
September 16th in Allentown, PA typically brings pleasant fall weather, with average highs around 74°F and lows near 54°F. Over 55 years of records, the warmest September 16th was in 1991 (81°F average), while the coldest was 1984 (52°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 42% of September 16th dates historically, with the wettest September 16th recording 6.37" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 16th in Allentown, PA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 55° | 66° | — | — |
| 2024 | 78° | 48° | 63° | — | — |
| 2023 | 76° | 53° | 64° | — | — |
| 2022 | 77° | 46° | 62° | — | — |
| 2021 | 76° | 65° | 70° | 0.01" | — |
| 2020 | 71° | 42° | 57° | — | — |
| 2019 | 82° | 64° | 73° | — | — |
| 2018 | 86° | 62° | 74° | — | — |
| 2017 | 86° | 61° | 73° | 0.02" | — |
| 2016 | 79° | 47° | 63° | — | — |
| 2015 | 87° | 51° | 69° | — | — |
| 2014 | 72° | 50° | 61° | 0.09" | — |
| 2013 | 71° | 50° | 61° | 0.08" | — |
| 2012 | 73° | 47° | 60° | — | — |
| 2011 | 65° | 45° | 55° | — | — |
| 2010 | 73° | 47° | 60° | 0.18" | — |
| 2009 | 66° | 56° | 61° | 0.11" | — |
| 2008 | 68° | 53° | 61° | — | — |
| 2007 | 66° | 42° | 54° | — | — |
| 2006 | 76° | 60° | 68° | 0.15" | — |
| 2005 | 87° | 70° | 78° | 0.15" | — |
| 2004 | 74° | 63° | 68° | 0.04" | — |
| 2003 | 78° | 55° | 67° | — | — |
| 2002 | 82° | 59° | 71° | 0.01" | — |
| 2001 | 74° | 40° | 57° | — | — |
| 2000 | 63° | 46° | 54° | — | — |
| 1999 | 66° | 57° | 62° | 6.37" | — |
| 1998 | 87° | 68° | 78° | — | — |
| 1997 | 79° | 54° | 66° | — | — |
| 1996 | 70° | 54° | 62° | 0.48" | — |
| 1995 | 72° | 52° | 62° | 0.06" | — |
| 1994 | 77° | 69° | 73° | — | — |
| 1993 | 67° | 57° | 62° | 0.94" | — |
| 1992 | 84° | 55° | 70° | — | — |
| 1991warmest | 95° | 67° | 81° | — | — |
| 1990 | 71° | 49° | 60° | 0.17" | — |
| 1989 | 64° | 60° | 62° | 0.81" | — |
| 1988 | 69° | 42° | 56° | — | — |
| 1987 | 80° | 58° | 69° | — | — |
| 1986 | 67° | 44° | 55° | 0.13" | — |
| 1985 | 74° | 44° | 59° | — | — |
| 1984coldest | 65° | 40° | 52° | — | — |
| 1983 | 70° | 43° | 56° | — | — |
| 1982 | 80° | 65° | 72° | 0.01" | — |
| 1981 | 67° | 55° | 61° | 0.49" | — |
| 1980 | 71° | 55° | 63° | — | — |
| 1979 | 74° | 46° | 60° | — | — |
| 1978 | 74° | 57° | 65° | 0.12" | — |
| 1977 | 66° | 60° | 63° | 0.61" | — |
| 1976 | 70° | 65° | 67° | 2.63" | — |
| 1975 | 63° | 48° | 55° | — | — |
| 1974 | 72° | 53° | 62° | — | — |
| 1973 | 76° | 52° | 64° | — | — |
| 1972 | 80° | 49° | 64° | — | — |
| 1971 | 81° | 61° | 71° | 0.08" | — |
Allentown, PA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Allentown, PA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Allentown, PA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Allentown, PA
Most pleasant months in Allentown, PA: May, June, September.
What to expect on September 16th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
September 16th outlook →