Climate and monthly weather forecast
Philadelphia, PA

The George Washington statue in front of the Independence Hall in Philadelphia, Pennsylvania
The George Washington statue in front of the Independence Hall in Philadelphia, Pennsylvania

Weather in January

January, the same as December, is another cold winter month in Philadelphia, Pennsylvania, with average temperature fluctuating between 37.4°F (3°C) and 25.5°F (-3.6°C). With an average high-temperature of 37.4°F (3°C) and an average low-temperature of 25.5°F (-3.6°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter, in Philadelphia, is another cold month, with average temperature ranging between max 41.5°F (5.3°C) and min 27.9°F (-2.3°C). In February, the average high-temperature is essentially the same as in January - a still wintry 41.5°F (5.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Philadelphia, Pennsylvania, with average temperature fluctuating between 49.8°F (9.9°C) and 35.1°F (1.7°C). In March, the average high-temperature slightly increases, from a cold 41.5°F (5.3°C) in February, to a chilly 49.8°F (9.9°C). Weather in March »

Weather in April

April is a comfortable spring month in Philadelphia, Pennsylvania, with temperature in the range of an average high of 61.7°F (16.5°C) and an average low of 45.1°F (7.3°C). In April, the average high-temperature rises, from a frosty 49.8°F (9.9°C) in March, to a comfortable 61.7°F (16.5°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Philadelphia, Pennsylvania, with average temperature varying between 72°F (22.2°C) and 55°F (12.8°C). In Philadelphia, Pennsylvania, the average high-temperature rises, from an enjoyable 61.7°F (16.5°C) in April, to an agreeable 72°F (22.2°C). Weather in May »

Weather in June

June, the first month of the summer, in Philadelphia, is a warm month, with average temperature ranging between min 63.3°F (17.4°C) and max 80.2°F (26.8°C). In Philadelphia, the average high-temperature slightly increases, from a pleasant 72°F (22.2°C) in May, to a warm 80.2°F (26.8°C). Weather in June »

Weather in July

July in Philadelphia, Pennsylvania, is a hot summer month, with temperature in the range of an average low of 69.3°F (20.7°C) and an average high of 86.4°F (30.2°C). July is the warmest month, with an average high-temperature of 86.4°F (30.2°C) and an average low-temperature of 69.3°F (20.7°C). The average heat index is evaluated at a torrid 96.8°F (36°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Philadelphia, Pennsylvania, with temperature in the range of an average low of 68°F (20°C) and an average high of 84°F (28.9°C). In Philadelphia, the average high-temperature is practically the same as in July - a moderately hot 84°F (28.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Philadelphia, Pennsylvania, with average temperature fluctuating between 76.6°F (24.8°C) and 61.2°F (16.2°C). In Philadelphia, the average high-temperature slightly decreases, from 84°F (28.9°C) in August, to a still warm 76.6°F (24.8°C). Weather in September »

Weather in October

October, like September, in Philadelphia, Pennsylvania, is another enjoyable autumn month, with average temperature fluctuating between 50.9°F (10.5°C) and 65.1°F (18.4°C). In Philadelphia, the average high-temperature in October decreases, from a moderately hot 76.6°F (24.8°C) in September, to a comfortable 65.1°F (18.4°C). Weather in October »

Weather in November

November, the last month of the autumn, in Philadelphia, is another cool month, with average temperature ranging between min 39.4°F (4.1°C) and max 52.7°F (11.5°C). In November, the average high-temperature drops, from an enjoyable 65.1°F (18.4°C) in October, to a cool 52.7°F (11.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Philadelphia, is also a frosty month, with average temperature varying between 32.9°F (0.5°C) and 44.1°F (6.7°C). In Philadelphia, the average high-temperature marginally drops, from a cool 52.7°F (11.5°C) in November, to a frosty 44.1°F (6.7°C). Weather in December »
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FAQ

What is the coldest month in Philadelphia?

The coldest month is January, with an average high-temperature of 37.4°F (3°C) and an average low-temperature of 25.5°F (-3.6°C).

What is the driest month in Philadelphia?

January and February are months with the least rain when the rain falls for 7.3 days and typically aggregates up to 0.83" (21mm) of rain.

How many days does it rain in Philadelphia?

Throughout the year, in Philadelphia, Pennsylvania, there are 127.8 rainfall days, and 13.82" (351mm) of precipitation is accumulated.

When does it snow in Philadelphia?

January through May, November and December are months with snowfall in Philadelphia.

How much does it snow in Philadelphia?

In Philadelphia, during the entire year, snow falls for 11.4 days, and aggregates up to 2.87" (73mm) of snow.

What is the month with the lowest UV index in Philadelphia?

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

When does it snow the most in Philadelphia?

The month with the most snowfall in Philadelphia is February when snow falls for 3.3 days and typically aggregates up to 0.98" (25mm) of snow.

What is the month with the coldest ocean in Philadelphia?

With an average ocean temperature of 39.9°F (4.4°C), February is the month with the coldest seawater.

What is the month with the least sunshine in Philadelphia?

The month with the least sunshine is February, with an average of 4.8h of sunshine.

What are the least humid months in Philadelphia?

April and August, with an average relative humidity of 71%, are the least humid months in Philadelphia.

When is the highest UV index in Philadelphia?

Months with the highest UV index are May through August, with an average maximum UV index of 6.

When it does not snow in Philadelphia?

June through October are months without snowfall in Philadelphia, Pennsylvania.

When are the longest days in Philadelphia?

The month with the longest days in Philadelphia, Pennsylvania, is June, with an average of 15h of daylight.

What is the warmest month in Philadelphia?

The warmest month is July, with an average high-temperature of 86.4°F (30.2°C) and an average low-temperature of 69.3°F (20.7°C).

What month has the most sunshine in Philadelphia?

July has the most sunshine of the year, with an average of 10.6h of sunshine.

What is the wettest month in Philadelphia?

August is the month with the most rainfall. Rain falls for 13.3 days and accumulates 1.65" (42mm) of precipitation.

What is the month with the warmest ocean in Philadelphia?

With an average ocean temperature of 75.9°F (24.4°C), August is the month with the warmest seawater in Philadelphia.

What is the most humid month in Philadelphia?

October is the most humid month in Philadelphia, Pennsylvania, with an average relative humidity of 77%.

What is the month with the shortest days in Philadelphia?

With an average of 9.4h of daylight, December has the shortest days of the year.

Average temperature
Philadelphia, PA

Average temperature - Philadelphia, PA

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.4°F).

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).

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Average pressure
Philadelphia, PA

Average pressure - Philadelphia, PA

The month with the highest atmospheric pressure is November (30.12").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed
Philadelphia, PA

Average wind speed - Philadelphia, PA

The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity
Philadelphia, PA

Average humidity - Philadelphia, PA

The month with the highest relative humidity is October (77%).
Months with the lowest relative humidity are April and August (71%).

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Average rainfall
Philadelphia, PA

Average rainfall - Philadelphia, PA

The wettest month (with the highest rainfall) is August (1.65").
The driest months (with the least rainfall) are January and February (0.83").

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Average rainfall days
Philadelphia, PA

Average rainfall days - Philadelphia, PA

The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is February (7.2 days).

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Average snowfall
Philadelphia, PA

Average snowfall - Philadelphia, PA

The month with the highest snowfall is February (0.98").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Philadelphia, PA

Average snowfall days - Philadelphia, PA

The month with the highest number of snowfall days is January (3.8 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature
Philadelphia, PA

Average sea temperature - Philadelphia, PA

The best month for swimming (with the highest average sea temperature) is August (75.9°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).

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Average daylight / Average sunshine
Philadelphia, PA

Average daylight / Average sunshine - Philadelphia, PA

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days
Philadelphia, PA

Average sunshine days - Philadelphia, PA

The month with the most sunshine days is December (20.9 days).
The month with the least sunshine days is May (13.3 days).

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Average UV index
Philadelphia, PA

Average UV index - Philadelphia, PA

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Philadelphia, PA

Average visibility - Philadelphia, PA

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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