Weather on April 20
Allentown, PA
55 Years of Data
Avg High
66°F
Avg Low
43°F
Warmest
1976
73°F avg
Coldest
1983
39°F avg
About This Date
April 20th in Allentown, PA typically brings mild spring weather, with average highs around 66°F and lows near 43°F. Over 55 years of records, the warmest April 20th was in 1976 (73°F average), while the coldest was 1983 (39°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 29% of April 20th dates historically, with the wettest April 20th recording 3.78" 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 April 20th in Allentown, PA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 47° | 59° | — | — |
| 2024 | 67° | 39° | 53° | 0.05" | — |
| 2023 | 73° | 42° | 58° | — | — |
| 2022 | 58° | 37° | 47° | — | — |
| 2021 | 74° | 35° | 54° | — | — |
| 2020 | 62° | 40° | 51° | — | — |
| 2019 | 74° | 58° | 66° | 3.78" | — |
| 2018 | 52° | 36° | 44° | — | — |
| 2017 | 75° | 52° | 63° | 0.56" | — |
| 2016 | 72° | 41° | 56° | — | — |
| 2015 | 62° | 47° | 54° | 1.85" | — |
| 2014 | 62° | 38° | 50° | — | — |
| 2013 | 56° | 38° | 47° | 0.08" | — |
| 2012 | 75° | 42° | 59° | — | — |
| 2011 | 68° | 45° | 56° | — | — |
| 2010 | 68° | 35° | 52° | — | — |
| 2009 | 47° | 42° | 44° | 1.27" | — |
| 2008 | 67° | 53° | 60° | — | — |
| 2007 | 71° | 35° | 53° | — | — |
| 2006 | 83° | 50° | 66° | — | — |
| 2005 | 84° | 57° | 71° | — | — |
| 2004 | 72° | 51° | 61° | — | — |
| 2003 | 69° | 34° | 51° | — | — |
| 2002 | 68° | 45° | 56° | 0.03" | — |
| 2001 | 61° | 32° | 46° | 0.03" | — |
| 2000 | 67° | 52° | 59° | — | — |
| 1999 | 51° | 32° | 42° | 1.14" | — |
| 1998 | 59° | 43° | 51° | 0.05" | — |
| 1997 | 54° | 38° | 46° | 0.03" | — |
| 1996 | 74° | 48° | 61° | — | — |
| 1995 | 66° | 49° | 57° | — | — |
| 1994 | 63° | 44° | 53° | — | — |
| 1993 | 75° | 56° | 65° | — | — |
| 1992 | 57° | 43° | 50° | — | — |
| 1991 | 48° | 42° | 45° | — | — |
| 1990 | 66° | 45° | 55° | 0.08" | — |
| 1989 | 63° | 35° | 49° | — | — |
| 1988 | 57° | 34° | 45° | — | — |
| 1987 | 76° | 48° | 62° | — | — |
| 1986 | 70° | 39° | 54° | — | — |
| 1985 | 75° | 56° | 65° | 0.23" | — |
| 1984 | 61° | 39° | 50° | — | — |
| 1983coldest | 46° | 32° | 39° | — | — |
| 1982 | 68° | 39° | 54° | — | — |
| 1981 | 53° | 33° | 43° | — | — |
| 1980 | 74° | 40° | 57° | 0.08" | — |
| 1979 | 65° | 33° | 49° | — | — |
| 1978 | 60° | 46° | 53° | 1.6" | — |
| 1977 | 69° | 49° | 59° | — | — |
| 1976warmest | 88° | 58° | 73° | — | — |
| 1975 | 56° | 43° | 49° | — | — |
| 1974 | 62° | 31° | 46° | — | — |
| 1973 | 68° | 45° | 56° | — | — |
| 1972 | 72° | 39° | 55° | 0.97" | — |
| 1971 | 70° | 44° | 57° | — | — |
55 years of data from ALLENTOWN LEHIGH VLY INTL AP