Weather on March 31
Allentown, PA
55 Years of Data
Avg High
57°F
Avg Low
37°F
Warmest
1998
69°F avg
Coldest
1971
34°F avg
About This Date
March 31st in Allentown, PA typically brings cool spring weather, with average highs around 57°F and lows near 37°F. Over 56 years of records, the warmest March 31st was in 1998 (69°F average), while the coldest was 1971 (34°F) — a 35°F range across recorded history. Precipitation has occurred on 52% of recorded March 31st dates, with snow falling 5% of the time (heaviest snowfall: 4.1"). The last decade has been 5.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.2°F warmer on this date compared to 20-30 years ago.
Planning for March 31st in Allentown, PA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 80° | 55° | 68° | — | — |
| 2025 | 78° | 47° | 62° | 4.55" | — |
| 2024 | 57° | 41° | 49° | — | — |
| 2023 | 55° | 24° | 40° | 0.03" | — |
| 2022 | 70° | 40° | 55° | 4.57" | — |
| 2021 | 64° | 45° | 54° | 0.28" | — |
| 2020 | 49° | 44° | 46° | 0.08" | — |
| 2019 | 63° | 35° | 49° | 0.28" | — |
| 2018 | 59° | 32° | 46° | — | — |
| 2017 | 42° | 38° | 40° | 3.63" | — |
| 2016 | 71° | 43° | 57° | — | — |
| 2015 | 45° | 32° | 38° | 0.46" | 0.4" |
| 2014 | 54° | 35° | 44° | 0.13" | — |
| 2013 | 57° | 28° | 43° | 0.41" | — |
| 2012 | 44° | 40° | 42° | 0.41" | — |
| 2011 | 42° | 36° | 39° | 0.13" | — |
| 2010 | 63° | 41° | 52° | 0.3" | — |
| 2009 | 60° | 31° | 45° | — | — |
| 2008 | 44° | 36° | 40° | 0.89" | — |
| 2007 | 54° | 39° | 46° | — | — |
| 2006 | 74° | 35° | 54° | — | — |
| 2005 | 54° | 34° | 44° | — | — |
| 2004 | 49° | 39° | 44° | 0.25" | — |
| 2003 | 42° | 27° | 34° | — | — |
| 2002 | 61° | 46° | 53° | 0.64" | — |
| 2001 | 46° | 36° | 41° | — | — |
| 2000 | 58° | 27° | 42° | — | — |
| 1999 | 73° | 30° | 52° | — | — |
| 1998warmest | 86° | 51° | 69° | — | — |
| 1997 | 50° | 29° | 39° | 2.79" | 4.1" |
| 1996 | 62° | 29° | 45° | — | — |
| 1995 | 51° | 35° | 43° | — | — |
| 1994 | 53° | 26° | 40° | — | — |
| 1993 | 67° | 38° | 52° | 0.03" | — |
| 1992 | 55° | 34° | 44° | 0.08" | — |
| 1991 | 49° | 24° | 36° | — | — |
| 1990 | 44° | 36° | 40° | 0.15" | — |
| 1989 | 45° | 40° | 42° | 0.97" | — |
| 1988 | 68° | 40° | 54° | — | — |
| 1987 | 64° | 32° | 48° | 1.47" | — |
| 1986 | 77° | 51° | 64° | — | — |
| 1985 | 45° | 35° | 40° | 0.97" | — |
| 1984 | 50° | 33° | 42° | — | — |
| 1983 | 48° | 30° | 39° | — | — |
| 1982 | 59° | 47° | 53° | 0.97" | — |
| 1981 | 73° | 52° | 62° | — | — |
| 1980 | 47° | 34° | 40° | 3.1" | 3" |
| 1979 | 80° | 50° | 65° | 0.23" | — |
| 1978 | 59° | 34° | 46° | — | — |
| 1977 | 66° | 47° | 56° | — | — |
| 1976 | 46° | 40° | 43° | 0.61" | — |
| 1975 | 45° | 28° | 36° | — | — |
| 1974 | 44° | 35° | 40° | 0.33" | — |
| 1973 | 62° | 46° | 54° | 0.25" | — |
| 1972 | 47° | 36° | 41° | — | — |
| 1971coldest | 41° | 27° | 34° | — | — |
56 years of data from ALLENTOWN LEHIGH VLY INTL AP