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March Weather in Philadelphia, United States

Last updated: June 24, 2025

In Philadelphia, United States, the average temperature in March is a comfortable 15°C (60°F). However, be prepared for a range of temperatures, as it can dip to a chilly -4°C (26°F) or soar up to a warm 31°C (88°F). Expect 121 mm (4.8 in) of precipitation over approximately 12 days, contributing to an average humidity of 82%. Plan accordingly to make the most of your visit!

March Temperature in Philadelphia

In March in Philadelphia, the average temperature is 15°C (60°F), with maximums reaching 31°C (88°F) and minimums dropping as low as -4°C (26°F). Travelers should be prepared for a wide temperature range and pack accordingly for both warm and cool conditions.

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

The chart illustrates March 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, March typically has an average temperature of 15°C (60°F), with highs reaching up to 31°C (88°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec485360647378818077685451
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.

March Precipitation in Philadelphia

In Philadelphia in March, the precipitation amount reaches 121 mm (4.8 in) over the course of 12 days.

March Precipitation Trends in Philadelphia

The chart displays monthly precipitation patterns in Philadelphia, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Philadelphia, March typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1101731221581291681071309310668121
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Philadelphia

In Philadelphia in March 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.

March Average Humidity in Philadelphia

This chart illustrates the average monthly humidity levels in Philadelphia, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Philadelphia is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%82%79%82%77%74%73%85%88%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Philadelphia

In Philadelphia in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Philadelphia.

Maximum UV Index Levels in Philadelphia for March

The chart shows the monthly maximum UV Index (UVI) for Philadelphia in March, 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 March, the maximum UV index in Philadelphia typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119864
Data source: Philadelphia March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)110 mm (4.3 inches)85%moderate
February Weather11°C (53°F)173 mm (6.8 inches)84%high
March Weather15°C (60°F)121 mm (4.8 inches)82%very high
April Weather18°C (64°F)158 mm (6.2 inches)82%very high
May Weather23°C (73°F)129 mm (5.1 inches)82%extreme
June Weather26°C (79°F)168 mm (6.6 inches)79%extreme
July Weather27°C (81°F)107 mm (4.2 inches)82%extreme
August Weather27°C (80°F)130 mm (5.1 inches)77%extreme
September Weather25°C (77°F)93 mm (3.7 inches)74%very high
October Weather20°C (68°F)106 mm (4.2 inches)73%very high
November Weather12°C (54°F)68 mm (2.7 inches)85%high
December Weather10°C (51°F)121 mm (4.8 inches)88%moderate

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