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

33°F

1°C

Humidity 61%
Wind Speed NE 8 mph
Barometer 29.93 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 2 Jan 4:55 pm CST
Extended Forecast for

Fairfield IL

  • Tonight

    Tonight: Cloudy, with a low around 28. Northeast wind 3 to 5 mph.

    Low: 28 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 41. North northeast wind around 6 mph becoming calm in the afternoon.

    High: 41 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 23. Calm wind.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 38. Calm wind.

    High: 38 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28. Calm wind becoming south around 5 mph after midnight.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 53. South southwest wind 5 to 10 mph.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41. South wind around 6 mph.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 60. Southwest wind 5 to 9 mph.

    High: 60 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. Light and variable wind.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 28. Northeast wind 3 to 5 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 41. North northeast wind around 6 mph becoming calm in the afternoon.
Saturday Night
Mostly clear, with a low around 23. Calm wind.
Sunday
Increasing clouds, with a high near 38. Calm wind.
Sunday Night
Partly cloudy, with a low around 28. Calm wind becoming south around 5 mph after midnight.
Monday
Sunny, with a high near 53. South southwest wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 41. South wind around 6 mph.
Tuesday
Partly sunny, with a high near 60. Southwest wind 5 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 40. Light and variable wind.
Wednesday
Mostly cloudy, with a high near 59. Light and variable wind.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 46. Calm wind becoming south southeast around 6 mph after midnight.
Thursday
Showers likely. Mostly cloudy, with a high near 62. South southwest wind 6 to 8 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 50. South southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Friday
A chance of showers. Mostly sunny, with a high near 62. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
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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:
3:16 pm CST Jan 2, 2026
Forecast Valid:
5pm CST Jan 2, 2026-6pm CST Jan 9, 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