July Weather in Vacaville, United States

Last updated: June 24, 2025

In Vacaville, United States, the average temperature in July is a pleasant 22°C (71°F). Expect a minimum of 12°C (53°F) and a maximum of 40°C (104°F), making it a month of warm variations. With 0 mm (0.0 in) of precipitation over 0 days, the skies are likely to be clear. Additionally, enjoy a comfortable average humidity of 44%!

July Temperature in Vacaville

In July in Vacaville, the average temperature is 22°C (71°F). Maximum temperatures can reach 40°C (104°F), while the minimum can drop to as low as 12°C (53°F). This climate makes Vacaville an ideal destination for travelers seeking warm weather with a comfortable range of temperatures.

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

The chart illustrates July temperature patterns in Vacaville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vacaville, July typically has an average temperature of 22°C (71°F), with highs reaching up to 40°C (104°F) and lows dropping to around 12°C (53°F).

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

July Precipitation in Vacaville

In Vacaville in July, the precipitation amount is 0 mm (0.0 in) during 0 days.

July Precipitation Trends in Vacaville

The chart displays monthly precipitation patterns in Vacaville, 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 Vacaville, July typically receives around 0 mm (0.0 inches) of precipitation spread over approximately 0 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 Vacaville

In Vacaville in July, humidity is 44%. With an average temperature of 22°C (71°F), this humidity feels like a refreshing embrace, making it pleasant for traveling and exploring the sights without discomfort.

July Average Humidity in Vacaville

This chart illustrates the average monthly humidity levels in Vacaville, 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 Vacaville is approximately 44%, 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 Vacaville

In Vacaville 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 Vacaville.

Maximum UV Index Levels in Vacaville for July

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

Data source: Vacaville 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 Vacaville Compares to Other Months

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

This table compares monthly weather conditions in Vacaville, 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 (50°F)	119 mm (4.7 inches)	84%	moderate
February Weather	12°C (53°F)	102 mm (4.0 inches)	84%	moderate
March Weather	13°C (56°F)	77 mm (3.0 inches)	83%	high
April Weather	16°C (61°F)	32 mm (1.3 inches)	81%	very high
May Weather	19°C (66°F)	17 mm (0.7 inches)	74%	very high
June Weather	22°C (71°F)	1 mm (0.1 inches)	64%	extreme
July Weather	22°C (71°F)	0 mm (0.0 inches)	44%	extreme
August Weather	22°C (72°F)	0 mm (0.0 inches)	36%	very high
September Weather	21°C (71°F)	1 mm (0.0 inches)	44%	very high
October Weather	18°C (65°F)	26 mm (1.0 inches)	65%	high
November Weather	13°C (56°F)	38 mm (1.5 inches)	84%	moderate
December Weather	10°C (50°F)	85 mm (3.3 inches)	83%	moderate