National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Fairfield, Fairfield Municipal Airport (KFWC)

Lat: 38.38°NLon: 88.41°WElev: 436ft.

Fair

58°F

14°C

Humidity 62%
Wind Speed Calm
Barometer 30.19 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 5 Oct 8:35 pm CDT
Extended Forecast for

Fairfield IL

  • Tonight

    Tonight: Clear, with a low around 44. Light east northeast wind.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77. Calm wind becoming east southeast around 5 mph.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 51. Calm wind.

    Low: 51 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming west southwest 5 to 7 mph in the morning.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56. Light and variable wind.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 83. Calm wind becoming northeast around 6 mph in the morning.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 52. Light east northeast wind.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Calm wind becoming east southeast around 6 mph in the morning.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 51. Light east wind.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 44. Light east northeast wind.
Tuesday
Sunny, with a high near 77. Calm wind becoming east southeast around 5 mph.
Tuesday Night
Clear, with a low around 51. Calm wind.
Wednesday
Sunny, with a high near 86. Calm wind becoming west southwest 5 to 7 mph in the morning.
Wednesday Night
Clear, with a low around 56. Light and variable wind.
Thursday
Sunny, with a high near 83. Calm wind becoming northeast around 6 mph in the morning.
Thursday Night
Mostly clear, with a low around 52. Light east northeast wind.
Friday
Sunny, with a high near 80. Calm wind becoming east southeast around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 51. Light east wind.
Saturday
Sunny, with a high near 83. Calm wind becoming southeast 5 to 8 mph in the morning.
Saturday Night
Partly cloudy, with a low around 56. East southeast wind 3 to 5 mph.
Sunday
A slight chance of showers. Mostly sunny, with a high near 81. Calm wind becoming southeast 5 to 9 mph in the morning.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 58. Southeast wind around 5 mph becoming calm in the evening.
Columbus Day
A slight chance of showers. Mostly sunny, with a high near 80. Calm wind becoming east 5 to 7 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfield IL
 38.38°N 88.37°W
Last Update:
8:26 pm CDT Oct 5, 2026
Forecast Valid:
8pm CDT Oct 5, 2026-6pm CDT Oct 12, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation