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

34°F

1°C

Humidity 76%
Wind Speed Calm
Barometer 30.25 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 13 Feb 5:55 am CST
Extended Forecast for

4 Miles S Johnsonville IL

  • Today

    Today: Sunny, with a high near 55. Light east southeast wind becoming south 5 to 10 mph in the morning.

    High: 55 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 34. South wind 3 to 5 mph.

    Low: 34 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Rain likely, mainly after 3pm. Cloudy, with a high near 52. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 52 °F

    Mostly Cloudy
    then Rain
    Likely

  • Saturday Night

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

    Low: 44 °F

    Rain

  • Sunday

    Sunday: A 40 percent chance of rain before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 10 mph.

    High: 55 °F

    Chance Rain
    then Partly
    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 58. Calm wind becoming south around 5 mph.

    High: 58 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42. Calm wind becoming south around 5 mph after midnight.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 62. South wind 5 to 11 mph, with gusts as high as 20 mph.

    High: 62 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 55. Light east southeast wind becoming south 5 to 10 mph in the morning.
Tonight
Increasing clouds, with a low around 34. South wind 3 to 5 mph.
Saturday
Rain likely, mainly after 3pm. Cloudy, with a high near 52. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
Rain. Low around 44. East wind around 6 mph. Chance of precipitation is 90%.
Sunday
A 40 percent chance of rain before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 10 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 58. Calm wind becoming south around 5 mph.
Monday Night
Mostly cloudy, with a low around 42. Calm wind becoming south around 5 mph after midnight.
Tuesday
Mostly cloudy, with a high near 62. South wind 5 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 54. South wind 10 to 14 mph, with gusts as high as 25 mph.
Wednesday
Mostly cloudy, with a high near 69. Southwest wind 11 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 48. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Thursday
Partly sunny, with a high near 64. South southwest wind 9 to 13 mph, with gusts as high as 21 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:
4:42 am CST Feb 13, 2026
Forecast Valid:
6am CST Feb 13, 2026-6pm CST Feb 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation