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

39°F

4°C

Humidity 69%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 12 Feb 9:55 pm CST
Extended Forecast for

4 Miles S Johnsonville IL

  • Tonight

    Tonight: Mostly clear, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 55. Calm wind becoming south 5 to 7 mph.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 35. Calm wind.

    Low: 35 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Showers likely, mainly after noon. Cloudy, with a high near 53. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 53 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers. Low around 44. East wind around 6 mph. Chance of precipitation is 90%.

    Low: 44 °F

    Showers

  • Sunday

    Sunday: A 40 percent chance of showers before noon. Partly sunny, with a high near 56. Northeast wind 6 to 9 mph.

    High: 56 °F

    Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. North northeast wind around 5 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 59. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43. South wind 3 to 6 mph.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 30. Calm wind.
Friday
Sunny, with a high near 55. Calm wind becoming south 5 to 7 mph.
Friday Night
Increasing clouds, with a low around 35. Calm wind.
Saturday
Showers likely, mainly after noon. Cloudy, with a high near 53. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
Showers. Low around 44. East wind around 6 mph. Chance of precipitation is 90%.
Sunday
A 40 percent chance of showers before noon. Partly sunny, with a high near 56. Northeast wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 37. North northeast wind around 5 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 59. Calm wind becoming south southeast around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 43. South wind 3 to 6 mph.
Tuesday
Mostly cloudy, with a high near 63. South wind 6 to 13 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 55. South southwest wind 10 to 14 mph, with gusts as high as 25 mph.
Wednesday
Mostly cloudy, with a high near 68. Southwest wind 11 to 17 mph, with gusts as high as 25 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 47. West southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Thursday
A slight chance of showers. Mostly sunny, with a high near 61. Southwest wind 8 to 13 mph, with gusts as high as 20 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:
7:57 pm CST Feb 12, 2026
Forecast Valid:
10pm CST Feb 12, 2026-6pm CST Feb 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation