July Weather in Rockville, United States

Last updated: June 24, 2025

In July, the average temperature in Rockville, United States is a comfortable 23°C (74°F), with fluctuations ranging from a cool 10°C (50°F) to a warm 35°C (95°F). Expect 98 mm (3.9 in) of precipitation over about 10 days, contributing to an average humidity level of 81%. Whether you're exploring or relaxing, be prepared for a mix of warm days and occasional showers!

July Temperature in Rockville

In July in Rockville, the average temperature is 23°C (74°F). Maximums can reach 35°C (95°F), while minimums can drop to as low as 10°C (50°F). Be prepared for warm days and cooler nights while enjoying all that Rockville has to offer!

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

The chart illustrates July temperature patterns in Rockville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rockville, July typically has an average temperature of 23°C (74°F), with highs reaching up to 35°C (95°F) and lows dropping to around 10°C (50°F).

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

July Precipitation in Rockville

In Rockville in July, the total precipitation amount is 98 mm (3.9 in) recorded over a span of 10 days.

July Precipitation Trends in Rockville

The chart displays monthly precipitation patterns in Rockville, 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 Rockville, July typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 10 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 Rockville

In Rockville in July, humidity is 81%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket draped over your skin, making travel feel a bit more sluggish and requiring plenty of water breaks to stay comfortable.

July Average Humidity in Rockville

This chart illustrates the average monthly humidity levels in Rockville, 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 Rockville is approximately 81%, 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 Rockville

In Rockville in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Rockville.

Maximum UV Index Levels in Rockville for July

The chart shows the monthly maximum UV Index (UVI) for Rockville 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 Rockville typically reaches 9, which falls under the very high exposure category.

Data source: Rockville 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 Rockville Compares to Other Months

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

This table compares monthly weather conditions in Rockville, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (15°F)	19 mm (0.8 inches)	87%	low
February Weather	-10°C (15°F)	24 mm (1.0 inches)	90%	moderate
March Weather	0°C (31°F)	50 mm (2.0 inches)	85%	moderate
April Weather	5°C (42°F)	81 mm (3.2 inches)	84%	high
May Weather	14°C (58°F)	95 mm (3.7 inches)	78%	very high
June Weather	21°C (71°F)	69 mm (2.7 inches)	80%	very high
July Weather	23°C (74°F)	98 mm (3.9 inches)	81%	very high
August Weather	21°C (70°F)	143 mm (5.6 inches)	81%	very high
September Weather	17°C (63°F)	115 mm (4.5 inches)	81%	high
October Weather	8°C (47°F)	103 mm (4.1 inches)	84%	moderate
November Weather	0°C (32°F)	29 mm (1.2 inches)	88%	moderate
December Weather	-6°C (22°F)	45 mm (1.8 inches)	84%	low