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

68°F

20°C

Humidity 36%
Wind Speed SE 7 mph
Barometer 30.14 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 8 Apr 7:15 pm CDT
Extended Forecast for

Fairfield IL

  • Tonight

    Tonight: Mostly clear, with a low around 53. South wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77. South southwest wind 9 to 13 mph, with gusts as high as 22 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. South wind 6 to 8 mph.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 75 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. North northwest wind around 6 mph becoming northeast after midnight. Chance of precipitation is 40%.

    Low: 52 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. East wind around 6 mph. Chance of precipitation is 20%.

    High: 76 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. East southeast wind 3 to 6 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 80. South southwest wind 7 to 15 mph, with gusts as high as 24 mph.

    High: 80 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. South wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 53. South wind 6 to 9 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 77. South southwest wind 9 to 13 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 54. South wind 6 to 8 mph.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. North northwest wind around 6 mph becoming northeast after midnight. Chance of precipitation is 40%.
Saturday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. East wind around 6 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 59. East southeast wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 80. South southwest wind 7 to 15 mph, with gusts as high as 24 mph.
Sunday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. South wind 10 to 14 mph, with gusts as high as 25 mph.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. South southwest wind 14 to 18 mph, with gusts as high as 28 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South southwest wind around 14 mph, with gusts as high as 24 mph.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 80. South southwest wind 13 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 61. South southwest wind around 11 mph, with gusts as high as 21 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 72. Southwest wind 10 to 13 mph, with gusts as high as 21 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:
3:52 pm CDT Apr 8, 2026
Forecast Valid:
7pm CDT Apr 8, 2026-6pm CDT Apr 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation