August Weather in Fairfield, United States

Last updated: June 24, 2025

In August, the average temperature in Fairfield, United States hovers around 23°C (73°F), making it quite comfortable for outdoor activities. However, be prepared for a temperature range that can dip to a cool 8°C (46°F) or soar to a scorching 40°C (104°F). Expect a modest precipitation of 9 mm (0.3 in) spread over 2 days, complemented by an average humidity level of 64%. Enjoy your time in this vibrant locale!

August Temperature in Fairfield

In August in Fairfield, the average temperature is 23°C (73°F), with maximums reaching up to 40°C (104°F) and minimums dipping as low as 8°C (46°F). It's advisable to pack for both warm days and cooler nights to make the most of your visit.

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

The chart illustrates August 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, August typically has an average temperature of 23°C (73°F), with highs reaching up to 40°C (104°F) and lows dropping to around 8°C (46°F).

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

August Precipitation in Fairfield

In Fairfield in August, the precipitation amount is 9 mm (0.3 in) over a period of 2 days.

August Precipitation Trends in Fairfield

The chart displays monthly precipitation patterns in Fairfield, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Fairfield, August typically receives around 9 mm (0.3 inches) of precipitation spread over approximately 2 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Fairfield

In Fairfield in August, humidity is 64%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making travel quite comfortable yet slightly sticky, urging travelers to enjoy leisurely activities early in the day or seek shade during peak hours.

August Average Humidity in Fairfield

This chart illustrates the average monthly humidity levels in Fairfield, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Fairfield is approximately 64%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Fairfield

In Fairfield in August, 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 August

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

Data source: Fairfield August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	76 mm (3.0 inches)	89%	low
February Weather	-1°C (31°F)	75 mm (3.0 inches)	89%	moderate
March Weather	4°C (40°F)	63 mm (2.5 inches)	87%	moderate
April Weather	8°C (47°F)	57 mm (2.2 inches)	84%	high
May Weather	14°C (57°F)	53 mm (2.1 inches)	77%	very high
June Weather	19°C (66°F)	24 mm (1.0 inches)	78%	very high
July Weather	23°C (74°F)	3 mm (0.1 inches)	77%	very high
August Weather	23°C (73°F)	9 mm (0.3 inches)	64%	very high
September Weather	17°C (62°F)	32 mm (1.2 inches)	62%	high
October Weather	9°C (48°F)	61 mm (2.4 inches)	79%	moderate
November Weather	4°C (39°F)	89 mm (3.5 inches)	87%	moderate
December Weather	0°C (33°F)	78 mm (3.1 inches)	90%	low