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

42°F

6°C

Humidity 49%
Wind Speed S 3 mph
Barometer 30.12 in
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 13 Feb 11:15 pm CST
Extended Forecast for

Fairfield IL

  • Tonight

    Tonight: Partly cloudy, with a low around 35. Light south wind.

    Low: 35 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers, mainly after 3pm. High near 53. Light and variable wind. Chance of precipitation is 80%.

    High: 53 °F

    Slight Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 44. East wind around 6 mph. Chance of precipitation is 90%.

    Low: 44 °F

    Showers

  • Sunday

    Sunday: A 30 percent chance of showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 54. Northeast wind 5 to 9 mph.

    High: 54 °F

    Chance
    Showers then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. Light northeast wind.

    Low: 37 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 59. Calm wind becoming south around 5 mph.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42. Light south wind.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 62. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 62 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 35. Light south wind.
Saturday
Showers, mainly after 3pm. High near 53. Light and variable wind. Chance of precipitation is 80%.
Saturday Night
Showers. Low around 44. East wind around 6 mph. Chance of precipitation is 90%.
Sunday
A 30 percent chance of showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 54. Northeast wind 5 to 9 mph.
Sunday Night
Mostly clear, with a low around 37. Light northeast wind.
Washington's Birthday
Mostly sunny, with a high near 59. Calm wind becoming south around 5 mph.
Monday Night
Mostly cloudy, with a low around 42. Light south wind.
Tuesday
Mostly cloudy, with a high near 62. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Tuesday Night
Mostly cloudy, with a low around 55. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Wednesday
Partly sunny, with a high near 69. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly cloudy, with a low around 49. Southwest wind around 7 mph.
Thursday
A chance of showers. Partly sunny, with a high near 65. South southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 42. South southwest wind 8 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.
Friday
Mostly sunny, with a high near 56. West wind 7 to 10 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:
11:32 pm CST Feb 13, 2026
Forecast Valid:
11pm CST Feb 13, 2026-6pm CST Feb 20, 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