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.

Mostly Cloudy

54°F

12°C

Humidity 87%
Wind Speed SE 3 mph
Barometer 29.69 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 18 Feb 10:35 pm CST
Extended Forecast for

Fairfield IL

  • Tonight

    Tonight: Increasing clouds, with a low around 52. South wind around 6 mph.

    Low: 52 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 68. South wind 6 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 70%.

    High: 68 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly clear, with a low around 41. Southwest wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 41 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 52. West wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 52 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31. North northwest wind 3 to 5 mph.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 45. Northwest wind 5 to 8 mph.

    High: 45 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of rain and snow showers before midnight. Mostly clear, with a low around 24. Northwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 38. Northwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 38 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 52. South wind around 6 mph.
Thursday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 68. South wind 6 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 70%.
Thursday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly clear, with a low around 41. Southwest wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Friday
Sunny, with a high near 52. West wind 6 to 14 mph, with gusts as high as 24 mph.
Friday Night
Partly cloudy, with a low around 31. North northwest wind 3 to 5 mph.
Saturday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 45. Northwest wind 5 to 8 mph.
Saturday Night
A slight chance of rain and snow showers before midnight. Mostly clear, with a low around 24. Northwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 38. Northwest wind 10 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 21. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 37. North northwest wind 5 to 10 mph becoming light in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Mostly clear, with a low around 20. Calm wind.
Tuesday
Mostly sunny, with a high near 46. 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 35. South southwest wind 8 to 11 mph, with gusts as high as 24 mph.
Wednesday
A chance of showers. Partly sunny, with a high near 54. Southwest wind 10 to 15 mph, with gusts as high as 24 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:
9:36 pm CST Feb 18, 2026
Forecast Valid:
10pm CST Feb 18, 2026-6pm CST Feb 25, 2026
 
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Additional Resources

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Chance of Precipitation