July Weather in Mount Vernon, United States

Last updated: June 24, 2025

In July, the average temperature in Mount Vernon, United States hovers around a warm 28°C (83°F). Expect a range of temperatures, with minimums dipping to 19°C (67°F) and maximums soaring up to 39°C (103°F). Be prepared for some rain, as 126 mm (5.0 in) of precipitation can fall over 16 days, accompanied by an average humidity level of around 83%.

July Temperature in Mount Vernon

In July in Mount Vernon, the average temperature is 28°C (83°F), with maximums reaching up to 39°C (103°F) and minimums dropping as low as 19°C (67°F). It's a great time to visit for those who enjoy warm weather and outdoor activities!

July Weather in Mount Vernon: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Mount Vernon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mount Vernon, July typically has an average temperature of 28°C (83°F), with highs reaching up to 39°C (103°F) and lows dropping to around 19°C (67°F).

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

July Precipitation in Mount Vernon

In Mount Vernon in July, the precipitation amount is 126 mm (5.0 in), occurring over the course of 16 days.

July Precipitation Trends in Mount Vernon

The chart displays monthly precipitation patterns in Mount Vernon, 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 Mount Vernon, July typically receives around 126 mm (5.0 inches) of precipitation spread over approximately 16 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 Mount Vernon

In Mount Vernon in July humidity is 83%. With an average temperature of 28°C (83°F), this humidity feels like a warm, sticky blanket wrapping around you, making travel uncomfortable and requiring frequent breaks to hydrate and cool down.

July Average Humidity in Mount Vernon

This chart illustrates the average monthly humidity levels in Mount Vernon, 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 Mount Vernon is approximately 83%, 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 Mount Vernon

In Mount Vernon 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 Mount Vernon.

Maximum UV Index Levels in Mount Vernon for July

The chart shows the monthly maximum UV Index (UVI) for Mount Vernon 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 Mount Vernon typically reaches 11, which falls under the extreme exposure category.

Data source: Mount Vernon 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 Mount Vernon Compares to Other Months

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

This table compares monthly weather conditions in Mount Vernon, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (52°F)	83 mm (3.2 inches)	86%	moderate
February Weather	14°C (57°F)	101 mm (4.0 inches)	84%	high
March Weather	16°C (62°F)	74 mm (2.9 inches)	83%	very high
April Weather	20°C (68°F)	82 mm (3.2 inches)	81%	very high
May Weather	24°C (76°F)	84 mm (3.3 inches)	81%	extreme
June Weather	27°C (80°F)	108 mm (4.3 inches)	81%	extreme
July Weather	28°C (83°F)	126 mm (5.0 inches)	83%	extreme
August Weather	28°C (82°F)	119 mm (4.7 inches)	81%	extreme
September Weather	26°C (80°F)	99 mm (3.9 inches)	82%	very high
October Weather	22°C (72°F)	83 mm (3.3 inches)	78%	very high
November Weather	14°C (58°F)	56 mm (2.2 inches)	86%	high
December Weather	12°C (54°F)	124 mm (4.9 inches)	89%	moderate