Weather on April 18
Allentown, PA
55 Years of Data
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 56 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.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 75° | 52° | 63° | — | — |
| 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° | — | — |
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
Allentown, PA has no months that meet our "pleasant" threshold — every season has tradeoffs.