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

74°F

23°C

Humidity 50%
Wind Speed SE 6 mph
Barometer 30.25 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 11 Apr 5:15 pm CDT
Extended Forecast for

4 Miles S Johnsonville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 58. South southeast wind 3 to 6 mph.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 81. South southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 81 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. South wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 65 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm. Partly sunny, with a high near 81. South southwest wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 67. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 67 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South southwest wind 10 to 17 mph, with gusts as high as 25 mph.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 68. South southwest wind 11 to 13 mph, with gusts as high as 22 mph.

    Low: 68 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 82 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Southwest wind 6 to 9 mph.

    Low: 64 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 58. South southeast wind 3 to 6 mph.
Sunday
Increasing clouds, with a high near 81. South southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. South wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Monday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm. Partly sunny, with a high near 81. South southwest wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 67. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South southwest wind 10 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 68. South southwest wind 11 to 13 mph, with gusts as high as 22 mph.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Southwest wind 6 to 9 mph.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 79. Southwest wind 7 to 10 mph.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 60. South southwest wind around 5 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. South wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 72. West wind 10 to 14 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:
5:26 pm CDT Apr 11, 2026
Forecast Valid:
5pm CDT Apr 11, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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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