July Weather in Fairfield, United States

Last updated: June 24, 2025

In Fairfield, United States, the average temperature in July hovers around 21°C (71°F). Expect a comfortable range with a minimum of 4°C (40°F) and a maximum reaching up to 37°C (98°F). During this month, you might encounter light precipitation totaling 9 mm (0.4 in) over approximately 2 days, contributing to an average humidity level of 77%. Stay prepared for varying weather while enjoying the mild climate!

July Temperature in Fairfield

In July in Fairfield, the average temperature is 21°C (71°F), with maximums reaching up to 37°C (98°F) and minimums dropping as low as 4°C (40°F). This dynamic range makes it essential for travelers to pack accordingly, ensuring comfort and readiness for any weather changes.

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

The chart illustrates July temperature patterns in Fairfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fairfield, July typically has an average temperature of 21°C (71°F), with highs reaching up to 37°C (98°F) and lows dropping to around 4°C (40°F).

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

July Precipitation in Fairfield

In Fairfield in July, the precipitation amount is 9 mm (0.4 in) over the course of 2 days.

July Precipitation Trends in Fairfield

The chart displays monthly precipitation patterns in Fairfield, 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 Fairfield, July typically receives around 9 mm (0.4 inches) of precipitation spread over approximately 2 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 Fairfield

In Fairfield in July, humidity is 77%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace that envelops you, making it both refreshing and slightly heavy, which can be a bit tiring for traveling.

July Average Humidity in Fairfield

This chart illustrates the average monthly humidity levels in Fairfield, 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 Fairfield is approximately 77%, 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 Fairfield

In Fairfield 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 Fairfield.

Maximum UV Index Levels in Fairfield for July

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

Data source: Fairfield 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 Fairfield Compares to Other Months

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

This table compares monthly weather conditions in Fairfield, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	13 mm (0.5 inches)	87%	low
February Weather	-7°C (19°F)	35 mm (1.4 inches)	88%	moderate
March Weather	0°C (33°F)	25 mm (1.0 inches)	83%	moderate
April Weather	5°C (41°F)	54 mm (2.1 inches)	78%	high
May Weather	12°C (53°F)	75 mm (2.9 inches)	76%	very high
June Weather	17°C (63°F)	80 mm (3.1 inches)	78%	very high
July Weather	21°C (71°F)	9 mm (0.4 inches)	77%	very high
August Weather	20°C (68°F)	20 mm (0.8 inches)	71%	very high
September Weather	14°C (58°F)	38 mm (1.5 inches)	68%	high
October Weather	6°C (44°F)	33 mm (1.3 inches)	72%	moderate
November Weather	2°C (36°F)	24 mm (0.9 inches)	84%	moderate
December Weather	-2°C (28°F)	23 mm (0.9 inches)	90%	low