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

62°F

17°C

Humidity 93%
Wind Speed Calm
Barometer 30.18 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 4 Oct 1:35 am CDT
Extended Forecast for

Fairfield IL

  • Overnight

    Overnight: Clear, with a low around 61. Calm wind.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 86. Calm wind becoming south southeast 5 to 7 mph in the afternoon.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57. Light south southeast wind.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 86. Light southeast wind becoming south 5 to 10 mph in the morning.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. South southeast wind 3 to 6 mph.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 84. South wind 3 to 8 mph. Chance of precipitation is 50%.

    High: 84 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 63. South southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 63 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. Calm wind becoming west northwest 5 to 8 mph in the morning.

    High: 78 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly cloudy, with a low around 55. North wind 6 to 8 mph.

    Low: 55 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Clear, with a low around 61. Calm wind.
Saturday
Sunny, with a high near 86. Calm wind becoming south southeast 5 to 7 mph in the afternoon.
Saturday Night
Clear, with a low around 57. Light south southeast wind.
Sunday
Sunny, with a high near 86. Light southeast wind becoming south 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 63. South southeast wind 3 to 6 mph.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 84. South wind 3 to 8 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 63. South southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%.
Tuesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. Calm wind becoming west northwest 5 to 8 mph in the morning.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 55. North wind 6 to 8 mph.
Wednesday
Sunny, with a high near 73. Northeast wind 8 to 11 mph.
Wednesday Night
Mostly clear, with a low around 48. Northeast wind 6 to 8 mph.
Thursday
Sunny, with a high near 71. East northeast wind around 7 mph.
Thursday Night
Mostly clear, with a low around 46. Light east northeast wind.
Friday
Sunny, with a high near 75. Calm wind becoming south around 6 mph in the afternoon.
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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:
1:31 am CDT Oct 4, 2025
Forecast Valid:
1am CDT Oct 4, 2025-6pm CDT Oct 10, 2025
 
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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