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

29°F

-2°C

Humidity 86%
Wind Speed N 3 mph
Barometer 29.91 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 2 Jan 6:15 am CST
Extended Forecast for

4 Miles S Johnsonville IL

  • Today

    Today: Patchy fog between 7am and 8am. Otherwise, mostly cloudy, with a high near 37. Northeast wind 3 to 6 mph.

    High: 37 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. Northeast wind 3 to 7 mph.

    Low: 28 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 40. North northeast wind 3 to 7 mph.

    High: 40 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 23. Calm wind.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 39. Calm wind.

    High: 39 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 29. Calm wind becoming south around 6 mph after midnight.

    Low: 29 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 54. South southwest wind 6 to 10 mph.

    High: 54 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41. South southwest wind 6 to 8 mph.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 60. Southwest wind 6 to 11 mph.

    High: 60 °F

    Partly Sunny

Detailed Forecast

Today
Patchy fog between 7am and 8am. Otherwise, mostly cloudy, with a high near 37. Northeast wind 3 to 6 mph.
Tonight
Mostly cloudy, with a low around 28. Northeast wind 3 to 7 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 40. North northeast wind 3 to 7 mph.
Saturday Night
Mostly clear, with a low around 23. Calm wind.
Sunday
Mostly sunny, with a high near 39. Calm wind.
Sunday Night
Partly cloudy, with a low around 29. Calm wind becoming south around 6 mph after midnight.
Monday
Sunny, with a high near 54. South southwest wind 6 to 10 mph.
Monday Night
Partly cloudy, with a low around 41. South southwest wind 6 to 8 mph.
Tuesday
Partly sunny, with a high near 60. Southwest wind 6 to 11 mph.
Tuesday Night
Mostly cloudy, with a low around 39. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 58. Calm wind becoming south southwest around 5 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 44. Calm wind becoming southeast around 5 mph after midnight.
Thursday
A chance of showers. Mostly cloudy, with a high near 60. South southeast wind 5 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Johnsonville IL
 38.45°N 88.54°W
Last Update:
4:46 am CST Jan 2, 2026
Forecast Valid:
6am CST Jan 2, 2026-6pm CST Jan 8, 2026
 
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Additional Resources

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Chance of Precipitation