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April Weather in Philadelphia, United States

Last updated: June 24, 2025

In Philadelphia, United States, the average temperature in April hovers around 15°C (60°F). While the mercury can dip as low as 0°C (32°F), it can also soar to a warm 31°C (87°F). Expect about 141 mm (5.5 in) of precipitation over 10 days, with an average humidity level of 82%. Be prepared for a mix of weather as you enjoy the beauty of this vibrant locale!

April Temperature in Philadelphia

In April in Philadelphia, the average temperature is 15°C (60°F). Maximums can reach 31°C (87°F), and minimums can be as low as 0°C (32°F). This diverse range in temperatures makes Philadelphia an exciting destination for travelers seeking both warm and cool experiences.

April Weather in Philadelphia: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Philadelphia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Philadelphia, April typically has an average temperature of 15°C (60°F), with highs reaching up to 31°C (87°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec424753607076807874645046
Data source: Temperature data for Philadelphia generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Philadelphia

In Philadelphia in April, the precipitation amount is 141 mm (5.5 in) over a span of 10 days.

April Precipitation Trends in Philadelphia

The chart displays monthly precipitation patterns in Philadelphia, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Philadelphia, April typically receives around 141 mm (5.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec1001761601411131071111199211879137
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Philadelphia

In Philadelphia in April humidity is 82%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and draining, which can hinder your travel experience.

April Average Humidity in Philadelphia

This chart illustrates the average monthly humidity levels in Philadelphia, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Philadelphia is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Philadelphia

In Philadelphia in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Philadelphia.

Maximum UV Index Levels in Philadelphia for April

The chart shows the monthly maximum UV Index (UVI) for Philadelphia in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Philadelphia typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
Data source: Philadelphia April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How April Weather in Philadelphia Compares to Other Months

Weather in Philadelphia varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Philadelphia, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Philadelphia, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)99 mm (3.9 inches)86%moderate
February Weather8°C (47°F)176 mm (6.9 inches)86%high
March Weather12°C (53°F)160 mm (6.3 inches)86%very high
April Weather15°C (60°F)141 mm (5.5 inches)82%very high
May Weather21°C (70°F)113 mm (4.4 inches)85%extreme
June Weather24°C (76°F)107 mm (4.2 inches)85%extreme
July Weather26°C (80°F)111 mm (4.4 inches)83%extreme
August Weather26°C (78°F)119 mm (4.7 inches)76%very high
September Weather24°C (75°F)92 mm (3.6 inches)76%very high
October Weather18°C (65°F)118 mm (4.6 inches)80%high
November Weather10°C (50°F)79 mm (3.1 inches)88%moderate
December Weather8°C (46°F)137 mm (5.4 inches)88%moderate

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