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Philadelphia, PA Weather on April 9
Philadelphia hit 85°F on April 9, 2010, shattering spring norms
April 9 in Philadelphia typically sees mild spring conditions with highs around 59°F and lows near 42°F. However, the date's weather history reveals dramatic extremes: an extraordinary 85°F record set in 2010 demonstrates how unseasonably warm a single April day can become, while a frigid 27°F low in 1972 reminds that late-season freezes remain a possibility. Across 53 years of records, this 58-degree gap between record extremes underscores the unpredictability of mid-spring weather in the region.
What to Expect on April 9
Planning for April 9th in Philadelphia, PA? Bring layers as temperatures can vary throughout the day.
Frequently Asked Questions
What was the warmest April 9 ever in Philadelphia?
The warmest April 9 in Philadelphia, PA reached 85°F in 2010. That is 26°F above the long-term average high of 59°F.
What was the coldest April 9 ever in Philadelphia?
The coldest April 9 in Philadelphia, PA dropped to 27°F in 1977. That is 15°F below the long-term average low of 42°F.
What is the average temperature on April 9 in Philadelphia?
On April 9, Philadelphia averages a high of 59°F and a low of 42°F based on 53 years of NOAA weather observations from PHILADELPHIA CITY.
How many years of weather data are available for April 9 in Philadelphia?
We have 53 years of weather records for April 9 in Philadelphia, 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 9 Weather History in Philadelphia
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 48°F | 32°F | -- | -- |
| 2024 | 69°F | 51°F | 0" | -- |
| 2023 | 53°F | 39°F | 0" | -- |
| 2022 | 64°F | 45°F | 0.66" | -- |
| 2021 | 74°F | 51°F | 0" | -- |
| 2019 | 82°F | 55°F | 0" | -- |
| 2018 | 49°F | 32°F | 0" | -- |
| 2017 | 60°F | 39°F | 0" | -- |
| 2016 | 51°F | 40°F | 0.05" | -- |
| 2015 | 44°F | 38°F | 0.18" | -- |
| 2014 | 65°F | 44°F | 0" | -- |
| 2013 | 79°F | 61°F | 0" | -- |
| 2012 | 70°F | 51°F | 0" | -- |
| 2011 | 49°F | 40°F | 1.9" | -- |
| 2010 | 85°F | 52°F | 1.55" | -- |
| 2009 | 63°F | 48°F | 0" | -- |
| 2008 | 62°F | 44°F | 0" | -- |
| 2007 | 44°F | 32°F | 0" | -- |
| 2006 | 52°F | 42°F | 0" | -- |
| 2005 | 65°F | 48°F | 0" | -- |
| 2004 | 63°F | 45°F | -- | -- |
| 2003 | 42°F | 38°F | 0.36" | -- |
| 2002 | 77°F | 60°F | 0.23" | -- |
| 2000 | 52°F | 31°F | 0.03" | -- |
| 1999 | 71°F | 43°F | 3.05" | -- |
| 1998 | 50°F | 38°F | 3.71" | -- |
| 1997 | 45°F | 32°F | 0" | -- |
| 1996 | 42°F | 32°F | 0.58" | -- |
| 1995 | 67°F | 41°F | 0.23" | -- |
| 1994 | 57°F | 34°F | 0" | -- |
| 1993 | 66°F | 44°F | -- | -- |
| 1992 | 62°F | 46°F | -- | -- |
| 1991 | 83°F | 69°F | -- | -- |
| 1990 | 61°F | 40°F | -- | -- |
| 1989 | 55°F | 43°F | -- | -- |
| 1988 | 60°F | 42°F | -- | -- |
| 1987 | 60°F | 43°F | -- | -- |
| 1986 | 55°F | 44°F | -- | -- |
| 1985 | 45°F | 33°F | -- | -- |
| 1984 | 65°F | 39°F | -- | -- |
| 1983 | 57°F | 44°F | -- | -- |
| 1982 | 39°F | 32°F | -- | -- |
| 1981 | 69°F | 56°F | -- | -- |
| 1980 | 62°F | 57°F | -- | -- |
| 1979 | 46°F | 36°F | -- | -- |
| 1978 | 54°F | 32°F | 0" | -- |
| 1977 | 46°F | 27°F | 0" | -- |
| 1976 | 55°F | 38°F | 0" | -- |
| 1975 | 54°F | 36°F | 0" | -- |
| 1974 | 46°F | 36°F | 2.31" | -- |
| 1973 | 59°F | 41°F | -- | -- |
| 1972 | 51°F | 27°F | 0" | -- |
| 1971 | 73°F | 43°F | -- | -- |
Based on 53 years of data from NOAA station: PHILADELPHIA CITY
How Has April 9 Changed?
The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
Monthly Climate Averages
Historical temperature and precipitation averages for Philadelphia, PA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.