July Weather in Potomac, United States

Last updated: June 24, 2025

In July, the average temperature in Potomac, United States is a pleasant 25°C (77°F). Expect minimums dipping to 13°C (55°F) and occasional highs soaring to 36°C (97°F). The month brings about 87 mm (3.4 in) of precipitation over 12 days, accompanied by an average humidity level of 80%. Stay prepared for both sunny skies and refreshing rain!

July Temperature in Potomac

In July in Potomac, the average temperature is 25°C (77°F). Maximum can reach 36°C (97°F) and minimum can be as low as 13°C (55°F). Overall, it's a pleasant time to visit Potomac, perfect for enjoying outdoor activities while being prepared for varying temperatures.

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

The chart illustrates July temperature patterns in Potomac, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Potomac, July typically has an average temperature of 25°C (77°F), with highs reaching up to 36°C (97°F) and lows dropping to around 13°C (55°F).

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

July Precipitation in Potomac

In Potomac in July, the precipitation amount is 87 mm (3.4 in) over the course of 12 days.

July Precipitation Trends in Potomac

The chart displays monthly precipitation patterns in Potomac, 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 Potomac, July typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Potomac

In Potomac in July humidity is 80%. With an average temperature of 25°C (77°F), this humidity feels like traveling through a warm, tropical rainforest where the air is thick and steamy, making even the simplest stroll feel like a workout.

July Average Humidity in Potomac

This chart illustrates the average monthly humidity levels in Potomac, 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 Potomac is approximately 80%, 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 Potomac

In Potomac in July, 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 Potomac.

Maximum UV Index Levels in Potomac for July

The chart shows the monthly maximum UV Index (UVI) for Potomac 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 Potomac typically reaches 10, which falls under the very high exposure category.

Data source: Potomac 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 Potomac Compares to Other Months

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

This table compares monthly weather conditions in Potomac, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	77 mm (3.0 inches)	82%	moderate
February Weather	-1°C (31°F)	77 mm (3.0 inches)	83%	moderate
March Weather	6°C (43°F)	111 mm (4.4 inches)	84%	high
April Weather	11°C (52°F)	118 mm (4.6 inches)	85%	very high
May Weather	18°C (65°F)	147 mm (5.8 inches)	79%	very high
June Weather	23°C (74°F)	112 mm (4.4 inches)	82%	extreme
July Weather	25°C (77°F)	87 mm (3.4 inches)	80%	very high
August Weather	23°C (74°F)	110 mm (4.3 inches)	81%	very high
September Weather	21°C (70°F)	76 mm (3.0 inches)	80%	very high
October Weather	14°C (57°F)	119 mm (4.7 inches)	82%	high
November Weather	5°C (41°F)	74 mm (2.9 inches)	88%	moderate
December Weather	2°C (36°F)	59 mm (2.3 inches)	84%	low