Weather on June 20
Allentown, PA
55 Years of Data
About This Date
June 20th in Allentown, PA typically brings warm summer weather, with average highs around 82°F and lows near 61°F. Over 55 years of records, the warmest June 20th was in 2012 (81°F average), while the coldest was 2004 (62°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 31% of June 20th dates historically, with the wettest June 20th recording 6.76" of rain. The last decade has been 4.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.8°F warmer on this date compared to 20-30 years ago.
Planning for June 20th in Allentown, PA? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 63° | 73° | — | — |
| 2024 | 91° | 65° | 78° | — | — |
| 2023 | 80° | 62° | 71° | — | — |
| 2022 | 78° | 46° | 62° | — | — |
| 2021 | 87° | 60° | 74° | — | — |
| 2020 | 86° | 61° | 73° | — | — |
| 2019 | 82° | 69° | 76° | 0.81" | — |
| 2018 | 87° | 61° | 74° | 0.05" | — |
| 2017 | 83° | 64° | 73° | — | — |
| 2016 | 91° | 62° | 77° | — | — |
| 2015 | 71° | 62° | 67° | 1.09" | — |
| 2014 | 80° | 51° | 66° | — | — |
| 2013 | 81° | 52° | 66° | — | — |
| 2012warmest | 95° | 66° | 81° | — | — |
| 2011 | 82° | 63° | 72° | — | — |
| 2010 | 90° | 70° | 80° | — | — |
| 2009 | 71° | 56° | 63° | 2.18" | — |
| 2008 | 80° | 50° | 65° | — | — |
| 2007 | 79° | 63° | 71° | 0.79" | — |
| 2006 | 83° | 62° | 72° | — | — |
| 2005 | 79° | 55° | 67° | — | — |
| 2004coldest | 72° | 53° | 62° | — | — |
| 2003 | 67° | 61° | 64° | 6.76" | — |
| 2002 | 82° | 54° | 68° | — | — |
| 2001 | 89° | 62° | 76° | 0.05" | — |
| 2000 | 83° | 51° | 67° | — | — |
| 1999 | 75° | 55° | 65° | — | — |
| 1998 | 87° | 63° | 75° | — | — |
| 1997 | 87° | 57° | 72° | — | — |
| 1996 | 74° | 60° | 67° | 0.1" | — |
| 1995 | 90° | 70° | 80° | — | — |
| 1994 | 89° | 68° | 79° | — | — |
| 1993 | 88° | 68° | 78° | 2.64" | — |
| 1992 | 75° | 60° | 68° | 0.89" | — |
| 1991 | 91° | 62° | 77° | — | — |
| 1990 | 80° | 58° | 69° | — | — |
| 1989 | 81° | 61° | 71° | — | — |
| 1988 | 90° | 69° | 79° | 0.51" | — |
| 1987 | 94° | 66° | 80° | — | — |
| 1986 | 80° | 60° | 70° | — | — |
| 1985 | 75° | 57° | 66° | — | — |
| 1984 | 83° | 61° | 72° | — | — |
| 1983 | 73° | 66° | 70° | 3.25" | — |
| 1982 | 73° | 57° | 65° | — | — |
| 1981 | 79° | 67° | 73° | 0.84" | — |
| 1980 | 67° | 59° | 63° | 0.61" | — |
| 1979 | 82° | 53° | 68° | — | — |
| 1978 | 88° | 59° | 73° | — | — |
| 1977 | 86° | 60° | 73° | 0.66" | — |
| 1976 | 86° | 71° | 79° | 0.48" | — |
| 1975 | 84° | 64° | 74° | — | — |
| 1974 | 83° | 66° | 74° | — | — |
| 1973 | 82° | 65° | 73° | 0.13" | — |
| 1972 | 80° | 68° | 74° | — | — |
| 1971 | 83° | 61° | 72° | — | — |
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.