Weather on April 18
Allentown, PA
55 Years of Data
Avg High
64°F
Avg Low
40°F
Warmest
1976
75°F avg
Coldest
2022
37°F avg
About This Date
April 18th in Allentown, PA typically brings mild spring weather, with average highs around 64°F and lows near 40°F. Over 55 years of records, the warmest April 18th was in 1976 (75°F average), while the coldest was 2022 (37°F) — a 38°F range across recorded history. Precipitation has occurred on 25% of recorded April 18th dates, with snow falling 2% of the time. 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 18th in Allentown, PA? Great weather for outdoor activities.
Cooling Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 31° | 52° | — | — |
| 2024 | 53° | 46° | 50° | 0.05" | — |
| 2023 | 52° | 38° | 45° | — | — |
| 2022coldest | 49° | 25° | 37° | 3.61" | — |
| 2021 | 61° | 43° | 52° | — | — |
| 2020 | 50° | 33° | 42° | 0.2" | — |
| 2019 | 74° | 52° | 63° | — | — |
| 2018 | 53° | 36° | 44° | — | — |
| 2017 | 70° | 43° | 56° | — | — |
| 2016 | 83° | 45° | 64° | — | — |
| 2015 | 80° | 42° | 61° | — | — |
| 2014 | 53° | 32° | 43° | — | — |
| 2013 | 61° | 49° | 55° | 0.41" | — |
| 2012 | 60° | 45° | 52° | — | — |
| 2011 | 63° | 42° | 52° | — | — |
| 2010 | 55° | 31° | 43° | — | — |
| 2009 | 77° | 37° | 57° | — | — |
| 2008 | 84° | 41° | 63° | — | — |
| 2007 | 54° | 39° | 46° | — | — |
| 2006 | 72° | 40° | 56° | — | — |
| 2005 | 76° | 40° | 58° | — | — |
| 2004 | 82° | 48° | 65° | — | — |
| 2003 | 47° | 36° | 41° | 0.56" | — |
| 2002 | 87° | 61° | 74° | — | — |
| 2001 | 49° | 33° | 41° | — | — |
| 2000 | 47° | 37° | 42° | 0.46" | — |
| 1999 | 59° | 38° | 48° | — | — |
| 1998 | 66° | 39° | 53° | — | — |
| 1997 | 43° | 37° | 40° | — | — |
| 1996 | 66° | 30° | 48° | — | — |
| 1995 | 68° | 39° | 54° | — | — |
| 1994 | 68° | 39° | 54° | — | — |
| 1993 | 60° | 39° | 50° | — | — |
| 1992 | 45° | 41° | 43° | 0.33" | — |
| 1991 | 55° | 46° | 51° | — | — |
| 1990 | 53° | 32° | 43° | — | — |
| 1989 | 67° | 47° | 57° | 0.25" | — |
| 1988 | 61° | 37° | 49° | 0.48" | — |
| 1987 | 63° | 52° | 57° | 0.05" | — |
| 1986 | 67° | 46° | 56° | — | — |
| 1985 | 74° | 36° | 55° | — | — |
| 1984 | 61° | 38° | 49° | 0.15" | — |
| 1983 | 48° | 33° | 41° | 0.23" | 0.9" |
| 1982 | 62° | 45° | 53° | — | — |
| 1981 | 76° | 45° | 60° | — | — |
| 1980 | 62° | 34° | 48° | — | — |
| 1979 | 60° | 37° | 49° | — | — |
| 1978 | 63° | 36° | 49° | — | — |
| 1977 | 75° | 38° | 56° | — | — |
| 1976warmest | 93° | 57° | 75° | — | — |
| 1975 | 69° | 37° | 53° | 0.2" | — |
| 1974 | 70° | 39° | 54° | — | — |
| 1973 | 71° | 53° | 62° | 0.03" | — |
| 1972 | 72° | 42° | 57° | — | — |
| 1971 | 65° | 37° | 51° | — | — |
55 years of data from ALLENTOWN LEHIGH VLY INTL AP