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October Weather in Fairfield, United States

Last updated: June 24, 2025

In October, the average temperature in Fairfield, United States hovers around 9°C (48°F), with a notable temperature range where it can dip as low as -13°C (10°F) and soar up to 28°C (82°F). Expect about 61 mm (2.4 in) of precipitation spread over approximately 9 days, contributing to an average humidity level of 79%. Stay prepared for a mix of chilly and mild weather!

October Temperature in Fairfield

In October in Fairfield, the average temperature is 9°C (48°F), with maximums reaching up to 28°C (82°F) and minimums dropping as low as -13°C (10°F). This diverse temperature range means travelers should be prepared for both warm days and chilly nights.

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

The chart illustrates October 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, October typically has an average temperature of 9°C (48°F), with highs reaching up to 28°C (82°F) and lows dropping to around -13°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec323140475765747362483932
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.

October Precipitation in Fairfield

In Fairfield in October, the precipitation amount is 61 mm (2.4 in) spread over 9 days.

October Precipitation Trends in Fairfield

The chart displays monthly precipitation patterns in Fairfield, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Fairfield, October typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec7675635753243932618978
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Fairfield

In Fairfield in October humidity is 79%. With an average temperature of 9°C (48°F), this humidity feels like a chilly mist wrapping around you, making outdoor activities brisk yet invigorating, but it can also leave you feeling damp and slightly chilled if you're not dressed appropriately for the conditions.

October Average Humidity in Fairfield

This chart illustrates the average monthly humidity levels in Fairfield, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Fairfield is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%89%87%84%78%78%77%64%62%79%87%90%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Fairfield

In Fairfield in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Fairfield.

Maximum UV Index Levels in Fairfield for October

The chart shows the monthly maximum UV Index (UVI) for Fairfield in October, 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 October, the maximum UV index in Fairfield typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2456891097532
Data source: Fairfield October 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 October 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 October’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 October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)76 mm (3.0 inches)89%low
February Weather-1°C (31°F)75 mm (3.0 inches)89%moderate
March Weather4°C (40°F)63 mm (2.5 inches)87%moderate
April Weather8°C (47°F)57 mm (2.2 inches)84%high
May Weather14°C (57°F)53 mm (2.1 inches)77%very high
June Weather19°C (66°F)24 mm (1.0 inches)78%very high
July Weather23°C (74°F)3 mm (0.1 inches)77%very high
August Weather23°C (73°F)9 mm (0.3 inches)64%very high
September Weather17°C (62°F)32 mm (1.2 inches)62%high
October Weather9°C (48°F)61 mm (2.4 inches)79%moderate
November Weather4°C (39°F)89 mm (3.5 inches)87%moderate
December Weather0°C (33°F)78 mm (3.1 inches)90%low

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