July Weather in Mount Vernon

Last updated: March 2, 2024

The weather in Mount Vernon, United States, during July is characterized by an average temperature of 27°C (81°F). Highs can soar to 37°C (99°F), while lows may dip to 18°C (65°F). Typically, the humidity level in Mount Vernon throughout July hovers around 74%.

18°C (65°F)

Minimum temperature

27°C (81°F)

Average temperature

37°C (99°F)

Maximum temperature

74%

Humidity

Precipitation and Sunshine hours

In July, Mount Vernon averages 132 mm (5.2 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 14 hours 32 minutes of daylight, with the sun shining for approximately 11 hours 30 minutes each day. Additionally, there is a 49% probability of sunny days during this period.

132 mm (5.2 inches)

Precipitation

12 rainy days

Rainy days

11 hours 30 minutes

Sunshine hours

49%

Chance of sun

UV Index

In July, the UV Index in Mount Vernon reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00
UVI	1	2	3	5	8	9	10	9	8	6	4	2	1
Exposure	Low		Moderate		VeryHigh					High	Moderate	Low
Time to burn	45 min		30 min		15 min					25 min	30 min	45 min