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March Weather in Philadelphia, United States

Last updated: June 24, 2025

In Philadelphia, United States, the average temperature in March hovers around 12°C (53°F). During this time, temperatures can dip as low as -8°C (18°F) or soar to a warm 28°C (83°F). Expect about 160 mm (6.3 in) of precipitation spread over 12 days, and don't forget your umbrella, as the average humidity is a high 86%!

March Temperature in Philadelphia

In March in Philadelphia, the average temperature is 12°C (53°F). The maximum can reach 28°C (83°F) and the minimum can be as low as -8°C (18°F). Travelers should be prepared for a broad range of temperatures and pack accordingly.

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 12°C (53°F), with highs reaching up to 28°C (83°F) and lows dropping to around -8°C (18°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.

March Precipitation in Philadelphia

In Philadelphia in March, the precipitation amount is 160 mm (6.3 in) over a span 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 160 mm (6.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1001761601411131071111199211879137
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 86%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and prompting the need for warm, layered clothing while exploring the surroundings.

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 86%, 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 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.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
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 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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