July Weather in Philadelphia, United States

Last updated: June 24, 2025

In July, the average temperature in Philadelphia, United States hovers around a warm 27°C (81°F). Expect a cozy minimum of 18°C (65°F), while the heat can peak at a sizzling 37°C (99°F). With an average humidity of 82%, you'll definitely feel the warmth! However, be prepared for occasional showers, as 107 mm (4.2 in) of precipitation can grace the area over about 14 days. Enjoy the blend of sun and rain in this vibrant locale!

July Temperature in Philadelphia

In July in Philadelphia, the average temperature is 27°C (81°F). The maximum can reach 37°C (99°F) and the minimum can be as low as 18°C (65°F). This pleasant climate makes Philadelphia an ideal destination for travelers looking to enjoy warm weather.

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

The chart illustrates July 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, July typically has an average temperature of 27°C (81°F), with highs reaching up to 37°C (99°F) and lows dropping to around 18°C (65°F).

Data source: Temperature data for Philadelphia generated using information from the Copernicus Climate Change Service.

July Precipitation in Philadelphia

In Philadelphia in July, the precipitation amount is 107 mm (4.2 in) spread over a period of 14 days.

July Precipitation Trends in Philadelphia

The chart displays monthly precipitation patterns in Philadelphia, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Philadelphia, July typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in Philadelphia

In Philadelphia in July humidity is 82%. With an average temperature of 27°C (81°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel more exhausting, and leaving you longing for the relief of air-conditioned spaces during your travels.

July Average Humidity in Philadelphia

This chart illustrates the average monthly humidity levels in Philadelphia, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Philadelphia is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Philadelphia

In Philadelphia in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Philadelphia.

Maximum UV Index Levels in Philadelphia for July

The chart shows the monthly maximum UV Index (UVI) for Philadelphia in July, 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 July, the maximum UV index in Philadelphia typically reaches 11, which falls under the extreme exposure category.

Data source: Philadelphia July 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 July 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 July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	110 mm (4.3 inches)	85%	moderate
February Weather	11°C (53°F)	173 mm (6.8 inches)	84%	high
March Weather	15°C (60°F)	121 mm (4.8 inches)	82%	very high
April Weather	18°C (64°F)	158 mm (6.2 inches)	82%	very high
May Weather	23°C (73°F)	129 mm (5.1 inches)	82%	extreme
June Weather	26°C (79°F)	168 mm (6.6 inches)	79%	extreme
July Weather	27°C (81°F)	107 mm (4.2 inches)	82%	extreme
August Weather	27°C (80°F)	130 mm (5.1 inches)	77%	extreme
September Weather	25°C (77°F)	93 mm (3.7 inches)	74%	very high
October Weather	20°C (68°F)	106 mm (4.2 inches)	73%	very high
November Weather	12°C (54°F)	68 mm (2.7 inches)	85%	high
December Weather	10°C (51°F)	121 mm (4.8 inches)	88%	moderate