Philadelphia, PA All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in Philadelphia, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 105°F (41°C) | July 22, 2011 |
| Record Low | -5.9°F (-21°C) | January 17, 1982 and January 22, 1984 |
| Lowest High | 6.9°F (-14°C) | January 19, 1994 |
| Highest Low | 82.9°F (28°C) | July 22, 2011 and August 13, 2016 |
| Highest Mean | 94.0°F (34°C) | July 22, 2011 |
| Lowest Mean | 0.9°F (-17°C) | January 19, 1994 |
| Precipitation | ||
| Max in One Calendar Day | 6.32" (160.5 mm) | September 16, 1999 |
| Max in One Month | 18.85" (478.8 mm) | August 2011 |
| Least in One Month | 0.00" (0.0 mm) | January 1981 |
| Max in One Year | 66.26" (1683.1 mm) | 2018 |
| Least in One Year | 20.55" (522.0 mm) | 1984 |
| Snowfall | ||
| Max in One Calendar Day | 5.0" (12.7 cm) | March 9, 1976 |
| Max in One Month | 9.0" (22.9 cm) | January 1985 |
| Max in One Season | 9.0" (22.9 cm) | 1984-85 |
| Max in One Year | 9.0" (22.9 cm) | 1985 |
| Earliest Snow | 2.0" (5.1 cm) | January 5, 1985 |
| Earliest Measurable Snow | 2.0" (5.1 cm) | January 5, 1985 |
| Latest Snow | 5.0" (12.7 cm) | March 9, 1976 |
| Latest Measurable Snow | 5.0" (12.7 cm) | March 9, 1976 |
| Period of Record | ||
| Temperature | June 23, 1945 – February 2, 2025 | |
| Precipitation | June 23, 1945 – February 2, 2025 | |
| Snowfall | June 23, 1945 – January 20, 1985 | |
Note: Records compiled from NOAA GHCN-Daily observations at NE PHILA AP (8 mi from Philadelphia, PA). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
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Frequently Asked Questions
What is the hottest temperature ever recorded in Philadelphia, PA?
The all-time record high in Philadelphia, PA is 105°F (41°C), set on July 22, 2011.
What is the coldest temperature ever recorded in Philadelphia, PA?
The all-time record low in Philadelphia, PA is -5.9°F (-21°C), set on January 17, 1982 and January 22, 1984.
What is the most rain Philadelphia, PA has ever had in one day?
The most precipitation recorded in one calendar day near Philadelphia, PA is 6.32 inches, on September 16, 1999.
What is the biggest snowfall ever recorded in Philadelphia, PA?
The most snow recorded in one calendar day near Philadelphia, PA is 5.0 inches, on March 9, 1976.
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