Weather on March 15
Allentown, PA
55 Years of Data
Avg High
51°F
Avg Low
32°F
Warmest
1990
63°F avg
Coldest
1993
17°F avg
About This Date
March 15th in Allentown, PA typically brings cool spring weather, with average highs around 51°F and lows near 32°F. Over 56 years of records, the warmest March 15th was in 1990 (63°F average), while the coldest was 1993 (17°F) — a 46°F range across recorded history. Precipitation has occurred on 29% of recorded March 15th dates, with snow falling 7% of the time. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for March 15th in Allentown, PA? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 46° | 33° | 40° | — | — |
| 2025 | 52° | 41° | 46° | — | — |
| 2024 | 68° | 43° | 55° | 0.08" | — |
| 2023 | 46° | 32° | 39° | — | — |
| 2022 | 67° | 27° | 47° | — | — |
| 2021 | 39° | 21° | 30° | — | — |
| 2020 | 56° | 34° | 45° | — | — |
| 2019 | 74° | 51° | 62° | 1.45" | — |
| 2018 | 46° | 26° | 36° | — | — |
| 2017 | 29° | 19° | 24° | — | — |
| 2016 | 55° | 42° | 49° | — | — |
| 2015 | 44° | 37° | 41° | — | — |
| 2014 | 56° | 36° | 46° | — | — |
| 2013 | 49° | 20° | 34° | — | — |
| 2012 | 59° | 42° | 51° | — | — |
| 2011 | 52° | 23° | 37° | 0.05" | — |
| 2010 | 46° | 42° | 44° | 0.56" | — |
| 2009 | 52° | 34° | 43° | — | — |
| 2008 | 54° | 40° | 47° | 0.25" | — |
| 2007 | 55° | 37° | 46° | 0.69" | — |
| 2006 | 44° | 35° | 40° | — | — |
| 2005 | 43° | 23° | 33° | — | — |
| 2004 | 57° | 31° | 44° | — | — |
| 2003 | 53° | 26° | 40° | — | — |
| 2002 | 67° | 50° | 58° | — | — |
| 2001 | 50° | 25° | 37° | — | — |
| 2000 | 68° | 28° | 48° | — | — |
| 1999 | 40° | 31° | 35° | 0.05" | 0.3" |
| 1998 | 42° | 26° | 34° | — | — |
| 1997 | 43° | 27° | 35° | — | — |
| 1996 | 60° | 35° | 48° | 0.94" | — |
| 1995 | 74° | 38° | 56° | — | — |
| 1994 | 51° | 34° | 42° | 0.03" | — |
| 1993coldest | 26° | 8° | 17° | — | — |
| 1992 | 33° | 18° | 25° | — | — |
| 1991 | 44° | 33° | 39° | 0.18" | 0.4" |
| 1990warmest | 79° | 47° | 63° | — | — |
| 1989 | 67° | 44° | 55° | 0.03" | — |
| 1988 | 34° | 26° | 30° | — | — |
| 1987 | 48° | 31° | 39° | — | — |
| 1986 | 63° | 43° | 53° | 0.28" | — |
| 1985 | 47° | 31° | 39° | — | — |
| 1984 | 50° | 25° | 37° | — | — |
| 1983 | 62° | 37° | 50° | — | — |
| 1982 | 44° | 34° | 39° | — | — |
| 1981 | 51° | 26° | 39° | — | — |
| 1980 | 40° | 32° | 36° | — | — |
| 1979 | 35° | 21° | 28° | — | — |
| 1978 | 47° | 37° | 42° | — | — |
| 1977 | 62° | 46° | 54° | — | — |
| 1976 | 52° | 31° | 41° | — | — |
| 1975 | 43° | 28° | 35° | 0.03" | 0.1" |
| 1974 | 51° | 25° | 38° | — | — |
| 1973 | 49° | 41° | 45° | 0.79" | — |
| 1972 | 45° | 29° | 37° | 0.18" | 0.1" |
| 1971 | 68° | 37° | 53° | 0.15" | — |
56 years of data from ALLENTOWN LEHIGH VLY INTL AP