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Philadelphia (PA) Climate by Month

The temperature in Philadelphia can vary greatly throughout the year. The temperatures shift from very warm to cold. It is also known for its large amounts of rain/snowfall. Now, let’s explore all the climate details to give you a full picture.

Average day and night temperature

Depending on the time of the year, temperatures range from very warm to chilly in Philadelphia. Typically, daytime temperatures range from a very warm 31°C in July to a chilly 5°C in the coolest month, January. Nights are cooler, with temperatures generally dropping to -3°C, particularly during the colder months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Philadelphia has a relatively rain/snowy climate with high precipitation levels, averaging 1272 mm of rain/snowfall annually. Philadelphia offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between August (132 mm) and November (78 mm) is not too significant, making the climate enjoyable for visitors and residents alike.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

For those who appreciate different seasons, Philadelphia serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 9.2 hours of sunshine daily, and embrace the darker days in December, offering only 4.7 hours of daily sunlight.

Monthly hours of sunshine

Daily hours of sunshine

Average water temperature

The mean water temperature over the year in Philadelphia ranges from 5°C in February to 25°C in August.

Water temperature over the year

The best time of year to visit Philadelphia in the United States of America

Other facts from our historical weather data:
  • When is summer in Philadelphia?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Philadelphia?
    July has an average maximum temperature of 31°C and is the warmest month of the year.
  • Which is the coldest month in Philadelphia?
    The coldest month is January with an average maximum temperature of 5°C.
  • Which is the wettest month in Philadelphia?
    August tops the wettest month list with 132 mm of rainfall.
  • Which is the driest month in Philadelphia?
    November is the driest month with 78 mm of precipitation.
  • Which is the sunniest month in Philadelphia?
    July is the sunniest month with an average of 275 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Philadelphia (PA)

    Fri   Nov 22
    5°C | 3°C
    SW 29 km/h
    11 mm
    overcast and heavy rain

    overcast and heavy rain

    Sat   Nov 23
    11°C | 3°C
    NW 32 km/h
    almost clear and no rain

    almost clear and no rain

    Sun   Nov 24
    12°C | 6°C
    NW 29 km/h
    partly cloudy and no rain

    partly cloudy and no rain