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August Weather in Fairfield, United States

Last updated: June 24, 2025

In August, the average temperature in Fairfield, United States is a pleasant 20°C (68°F). However, temperatures can swing significantly, with a minimum of 4°C (39°F) and a maximum reaching up to 39°C (102°F). Expect about 20 mm (0.8 in) of precipitation over 3 days, coupled with an average humidity level of 71%, which adds to the region's unique climate profile.

August Temperature in Fairfield

In August in Fairfield, the average temperature is 20°C (68°F). Maximum temperatures can reach as high as 39°C (102°F), while minimum temperatures can drop to as low as 4°C (39°F). This variability makes Fairfield an ideal destination for travelers seeking a mix of warm days and cooler nights.

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 20°C (68°F), with highs reaching up to 39°C (102°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec241932415362706858433528
Data source: Temperature data for Fairfield generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Fairfield

In Fairfield in August, the precipitation amount is 20 mm (0.8 in) accumulated over a period of 3 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 20 mm (0.8 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec13352554758092038332423
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Fairfield

In Fairfield in August, humidity is 71%. With an average temperature of 20°C (68°F), this humidity feels like a warm, moist embrace that can quickly lead to discomfort for travelers. The air clings to your skin, making even short walks feel more strenuous, while reaching for a refreshing drink becomes essential to stay hydrated.

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 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%88%83%78%76%78%77%71%68%72%84%91%
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.
JanFebMarAprMayJunJulAugSepOctNovDec2357910997532
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.
 TemperaturePrecipitationHumidityUV
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 Weather0°C (33°F)25 mm (1.0 inches)83%moderate
April Weather5°C (41°F)54 mm (2.1 inches)78%high
May Weather12°C (53°F)75 mm (2.9 inches)76%very high
June Weather17°C (63°F)80 mm (3.1 inches)78%very high
July Weather21°C (71°F)9 mm (0.4 inches)77%very high
August Weather20°C (68°F)20 mm (0.8 inches)71%very high
September Weather14°C (58°F)38 mm (1.5 inches)68%high
October Weather6°C (44°F)33 mm (1.3 inches)72%moderate
November Weather2°C (36°F)24 mm (0.9 inches)84%moderate
December Weather-2°C (28°F)23 mm (0.9 inches)90%low

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