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Allentown, PA Weather on April 11
April 11th in Allentown, PA typically brings mild spring weather, with average highs around 60°F and lows near 37°F. Over 55 years of records, the warmest April 11th was in 2011 (68°F average), while the coldest was 1999 (37°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 40% of April 11th dates historically, with the wettest April 11th recording 1.17" of rain. The last decade has been 5.7°F warmer on this date compared to 20-30 years ago.
What to Expect on April 11
Planning for April 11th in Allentown, PA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
April 11 Weather Records for Allentown
- •The all-time record high for April 11th in Allentown, PA is 85°F, set in 2017.
- •The coldest April 11th on record dropped to 24°F in 2018.
- •A freeze (32°F or below) has occurred on April 11th in 12 of the last 55 years.
- •Last year (1971), April 11th was 6°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest April 11 ever in Allentown?
The warmest April 11 in Allentown, PA reached 85°F in 2017. That is 25°F above the long-term average high of 60°F.
What was the coldest April 11 ever in Allentown?
The coldest April 11 in Allentown, PA dropped to 24°F in 2018. That is 13°F below the long-term average low of 37°F.
What is the average temperature on April 11 in Allentown?
On April 11, Allentown averages a high of 60°F and a low of 37°F based on 55 years of NOAA weather observations from ALLENTOWN LEHIGH VLY INTL AP.
How many years of weather data are available for April 11 in Allentown?
We have 55 years of weather records for April 11 in Allentown, PA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
April 11 Weather History in Allentown
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 45°F | 39°F | 0.66" | -- |
| 2024 | 71°F | 52°F | 0.69" | -- |
| 2023 | 73°F | 34°F | 0" | -- |
| 2022 | 63°F | 30°F | 0" | -- |
| 2021 | 61°F | 50°F | 1.17" | -- |
| 2020 | 57°F | 35°F | 0" | -- |
| 2019 | 57°F | 39°F | 0" | -- |
| 2018 | 53°F | 24°F | 0" | -- |
| 2017 | 85°F | 45°F | 0" | -- |
| 2016 | 61°F | 42°F | 0.05" | -- |
| 2015 | 58°F | 38°F | 0" | -- |
| 2014 | 71°F | 43°F | 0.2" | -- |
| 2013 | 63°F | 49°F | 0" | -- |
| 2012 | 51°F | 29°F | 0.1" | -- |
| 2011 | 84°F | 51°F | 0.46" | -- |
| 2010 | 72°F | 37°F | 0" | -- |
| 2009 | 54°F | 36°F | 0.33" | -- |
| 2008 | 72°F | 52°F | 0.97" | -- |
| 2007 | 54°F | 24°F | 0.05" | -- |
| 2006 | 72°F | 35°F | 0" | -- |
| 2005 | 64°F | 43°F | 0" | -- |
| 2004 | 49°F | 38°F | 0.03" | -- |
| 2003 | 47°F | 38°F | 0.91" | -- |
| 2002 | 64°F | 37°F | 0" | -- |
| 2001 | 52°F | 47°F | 0.86" | -- |
| 2000 | 43°F | 35°F | 0.2" | -- |
| 1999 | 41°F | 32°F | 0.61" | -- |
| 1998 | 61°F | 32°F | 0" | -- |
| 1997 | 52°F | 27°F | 0" | -- |
| 1996 | 65°F | 38°F | 0" | -- |
| 1995 | 59°F | 35°F | 0" | -- |
| 1994 | 65°F | 41°F | 0" | -- |
| 1993 | 52°F | 40°F | 0" | -- |
| 1992 | 54°F | 42°F | 0.18" | -- |
| 1991 | 58°F | 39°F | 0" | -- |
| 1990 | 63°F | 32°F | 0.2" | -- |
| 1989 | 49°F | 27°F | 0" | -- |
| 1988 | 64°F | 36°F | 0" | -- |
| 1987 | 74°F | 36°F | 0.43" | -- |
| 1986 | 45°F | 34°F | 0" | -- |
| 1985 | 55°F | 33°F | 0" | -- |
| 1984 | 63°F | 33°F | 0" | -- |
| 1983 | 53°F | 40°F | 0" | -- |
| 1982 | 50°F | 30°F | 0" | -- |
| 1981 | 71°F | 45°F | 0.43" | -- |
| 1980 | 62°F | 43°F | 0" | -- |
| 1979 | 62°F | 33°F | 0" | -- |
| 1978 | 64°F | 45°F | 0.28" | -- |
| 1977 | 74°F | 42°F | 0" | -- |
| 1976 | 56°F | 28°F | 0.03" | -- |
| 1975 | 55°F | 28°F | 0" | -- |
| 1974 | 62°F | 33°F | 0" | -- |
| 1973 | 45°F | 33°F | 0" | -- |
| 1972 | 64°F | 37°F | 0.15" | -- |
| 1971 | 66°F | 33°F | 0" | -- |
Based on 55 years of data from NOAA station: ALLENTOWN LEHIGH VLY INTL AP
Monthly Climate Averages
Historical temperature and precipitation averages for Allentown, PA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.