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

38°F

3°C

Humidity 86%
Wind Speed Calm
Barometer 30.30 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 6 Apr 1:55 am CDT
Extended Forecast for

Fairfield IL

  • Overnight

    Overnight: Patchy frost between 3am and 4am. Otherwise, clear, with a low around 37. Light west southwest wind.

    Low: 37 °F

    Patchy Frost

  • Monday

    Monday: Sunny, with a high near 62. West southwest wind 6 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 39. North wind 6 to 8 mph.

    Low: 39 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 53. East northeast wind 7 to 9 mph.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38. East wind around 6 mph.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. South wind 6 to 10 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. South southeast wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70. South wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56. South wind around 6 mph.

    Low: 56 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Overnight
Patchy frost between 3am and 4am. Otherwise, clear, with a low around 37. Light west southwest wind.
Monday
Sunny, with a high near 62. West southwest wind 6 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Monday Night
Increasing clouds, with a low around 39. North wind 6 to 8 mph.
Tuesday
Partly sunny, with a high near 53. East northeast wind 7 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 38. East wind around 6 mph.
Wednesday
Mostly sunny, with a high near 72. South wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 51. South southeast wind 6 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 70. South wind 9 to 11 mph, with gusts as high as 20 mph.
Thursday Night
A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56. South wind around 6 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 74. South wind 6 to 8 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Light and variable wind becoming east around 5 mph after midnight.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79. East wind around 7 mph becoming south in the morning.
Saturday Night
Partly cloudy, with a low around 60. South southeast wind around 6 mph.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 81. South wind 7 to 14 mph, with gusts as high as 22 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfield IL
 38.38°N 88.37°W
Last Update:
1:26 am CDT Apr 6, 2026
Forecast Valid:
2am CDT Apr 6, 2026-6pm CDT Apr 12, 2026
 
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Additional Resources

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Chance of Precipitation