Philadelphia, PA Weather
Philadelphia hourly forecast: next 24 hours
Today's high of 89°F (32°C) is about 4°F (2°C) above the typical August high of 85°F (30°C).
Current conditions in detail
Philadelphia weather tomorrow (Friday, August 14)
Tomorrow in Philadelphia looks sunny, with a high of 87° and an overnight low of 71°. Rain is unlikely (2% chance). Winds top out near 10 mph, and the UV index reaches 8 (very high).
Philadelphia 14-day forecast
About the weather in Philadelphia
Weather in Philadelphia is shaped by its humid subtropical climate - expect hot, humid summers and generally mild winters. July afternoons typically reach 88°F (31°C), while January highs hover near 42°F (5°C). Annual precipitation averages 48.5 inches (1233 mm) over about 129 rainy days.
Philadelphia weather: quick facts
- Hottest month: July - highs near 88°F (31°C)
- Coldest month: January - highs near 42°F (5°C)
- Record high: 99°F (37°C) · Record low: -7°F (-22°C) (2015–2024)
- Wettest month: July (14 rainy days) · Sunniest: July (11.6 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
- Snow: about 9 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 88°F (31°C) and overnight lows stay near 70°F (21°C). The coolest month is January, with typical highs of 42°F (5°C) and lows around 27°F (-3°C). Based on 2015–2024 weather data, temperatures have reached as high as 99°F (37°C) and dropped as low as -7°F (-22°C).
Rain, sun and snow
July is usually the wettest month. It brings about 4.7 inches (120 mm) of rain over 14 days, while November is the driest. July brings the most sunshine, averaging 11.6 hours of sun a day. Snow falls on about 9 days in a typical year, mostly from December through March.
Season by season
Spring (March through May)
Spring in Philadelphia is mild, with daytime highs averaging 63°F (17°C) and nights around 44°F (7°C); expect showers on roughly 34 days across the season, plus around 2 snowy days.
Summer (June through August)
Summer in Philadelphia is hot, with daytime highs averaging 85°F (29°C) and nights around 67°F (20°C); expect showers on roughly 38 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
Fall (September through November)
Fall in Philadelphia is crisp but comfortable, with daytime highs averaging 68°F (20°C) and nights around 51°F (11°C); expect showers on roughly 27 days across the season.
Winter (December through February)
Winter in Philadelphia is chilly, with daytime highs averaging 45°F (7°C) and nights around 29°F (-1°C); expect showers on roughly 31 days across the season, plus around 6 snowy days.
Average temperatures in Philadelphia by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 42° | 27° | 10 | 3.6 in | 6.0 h/day | 66% |
| February | 46° | 28° | 10 | 3.5 in | 6.9 h/day | 66% |
| March | 53° | 34° | 10 | 4.3 in | 7.9 h/day | 63% |
| April | 63° | 44° | 11 | 4.2 in | 8.9 h/day | 64% |
| May | 73° | 54° | 12 | 4.2 in | 9.7 h/day | 68% |
| June | 82° | 64° | 12 | 4.2 in | 11.2 h/day | 67% |
| July | 88° | 70° | 14 | 4.7 in | 11.6 h/day | 70% |
| August | 85° | 69° | 12 | 4.5 in | 10.7 h/day | 71% |
| September | 79° | 62° | 10 | 4.1 in | 9.0 h/day | 71% |
| October | 68° | 51° | 9 | 3.8 in | 7.9 h/day | 71% |
| November | 56° | 39° | 8 | 3.0 in | 7.4 h/day | 68% |
| December | 47° | 33° | 10 | 4.3 in | 5.8 h/day | 71% |