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

71°F

22°C

Humidity 61%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 19 Jun 8:35 pm CDT
Extended Forecast for

Fairfield IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85. Light west southwest wind.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 84. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 80%.

    High: 84 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 68. South southwest wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.

    Low: 68 °F

    Showers

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 79. North northwest wind around 11 mph. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. North wind 5 to 9 mph becoming light.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. Light north northeast wind.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 63. Calm wind.
Saturday
Mostly sunny, with a high near 85. Light west southwest wind.
Saturday Night
Partly cloudy, with a low around 66. Calm wind.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 84. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 68. South southwest wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.
Monday
A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 79. North northwest wind around 11 mph. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 61. North wind 5 to 9 mph becoming light.
Tuesday
Mostly sunny, with a high near 80. Light north northeast wind.
Tuesday Night
Partly cloudy, with a low around 62. Calm wind.
Wednesday
Sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 62. Light west northwest wind.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. Light and variable wind.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Calm wind becoming south southeast around 6 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:
3:01 pm CDT Jun 19, 2026
Forecast Valid:
8pm CDT Jun 19, 2026-6pm CDT Jun 26, 2026
 
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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