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July Weather in Fairfield, United States

Last updated: June 24, 2025

In July, the average temperature in Fairfield, United States reaches a balmy 30°C (86°F). However, temperatures can dip to a minimum of 19°C (67°F) or soar to a scorching 43°C (111°F). Expect 65 mm (2.6 in) of precipitation over approximately 11 days, with an average humidity level of 71%, ensuring a warm and somewhat humid atmosphere.

July Temperature in Fairfield

In July in Fairfield, the average temperature is 30°C (86°F), with maximums reaching as high as 43°C (111°F) and minimums dipping to around 19°C (67°F). Be prepared for warm weather and occasional extremes when planning your trip.

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 30°C (86°F), with highs reaching up to 43°C (111°F) and lows dropping to around 19°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec505262667582868681705954
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.

July Precipitation in Fairfield

In Fairfield in July, the precipitation amount is 65 mm (2.6 in) over a span of 11 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 65 mm (2.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec841131051171718266861001176992
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Fairfield

In Fairfield in July, humidity is 71%. With an average temperature of 30°C (86°F), this humidity feels like traveling through a warm mist, enveloping you in a sticky embrace that makes outdoor activities challenging and requires frequent breaks to stay refreshed.

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 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%80%78%79%81%77%71%67%69%73%82%87%
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 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. 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 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478111111121110864
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.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)84 mm (3.3 inches)79%moderate
February Weather11°C (52°F)113 mm (4.5 inches)80%high
March Weather17°C (62°F)105 mm (4.1 inches)78%very high
April Weather19°C (67°F)117 mm (4.6 inches)79%extreme
May Weather24°C (75°F)171 mm (6.7 inches)81%extreme
June Weather28°C (82°F)82 mm (3.2 inches)77%extreme
July Weather30°C (86°F)65 mm (2.6 inches)71%extreme
August Weather30°C (86°F)86 mm (3.4 inches)67%extreme
September Weather27°C (81°F)100 mm (4.0 inches)69%very high
October Weather21°C (70°F)117 mm (4.6 inches)73%very high
November Weather15°C (59°F)69 mm (2.7 inches)82%high
December Weather12°C (54°F)92 mm (3.6 inches)87%moderate

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