Climate in Philadelphia, PA

Philadelphia, PA enjoys a humid subtropical climate with warm summers and cold winters. The average high temperature throughout the year is around 73°F (23°C) while the average low temperature is around 50°F (10°C). Precipitation is fairly common in Philadelphia with an average of around 3.8 inches per month. There are generally four distinct seasons in Philadelphia, with each season having its own unique weather pattern. In the summer, temperatures can reach up to 90°F (32°C) and during the winter, temperatures can drop down to 20°F (-6°C). Snowfall is usually light but it does occur on occasion.

Philadelphia, Pennsylvania gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Philadelphia averages 13 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 207 sunny days per year in Philadelphia. The US average is 205 sunny days.

Philadelphia gets some kind of precipitation, on average, 119 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

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Weather Highlights

Summer High: the July high is around 87 degrees
Winter Low: the January low is 26
Rain: averages 47 inches of rain a year
Snow: averages 13 inches of snow a year

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BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Philadelphia is 7.3 (10=best), which means it is one of the most pleasant places in Pennsylvania.

September, June and May are the most pleasant months in Philadelphia, while January and February are the least comfortable months.

July is the hottest month for Philadelphia with an average high temperature of 87.0°, which ranks it as one of the hottest places in Pennsylvania. In Philadelphia, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Philadelphia are September, May and June.

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In Philadelphia, there are 25.2 days annually when the high temperature is over 90°, which is one of the hottest places in Pennsylvania.

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January has the coldest nighttime temperatures for Philadelphia with an average of 26.0°. This is one of the warmest places in Pennsylvania.

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In Philadelphia, there are 77.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Pennsylvania.

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In Philadelphia, there are 0.2 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Pennsylvania.

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The humidity is usually comfortable in Philadelphia but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.

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July is the wettest month in Philadelphia with 4.7 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Autumn with 28% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 47.2 inches in Philadelphia means that it is wetter than most places in Pennsylvania.

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April is the rainiest month in Philadelphia with 11.7 days of rain, and September is the driest month with only 8.5 rainy days. There are 118.9 rainy days annually in Philadelphia, which is less rainy than most places in Pennsylvania. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

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An annual snowfall of 13.1 inches in Philadelphia means that it is one of the least snowy places in Pennsylvania. February is the snowiest month in Philadelphia with 4.8 inches of snow, and 4 months of the year have significant snowfall.

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