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.

Mostly Cloudy

65°F

18°C

Humidity 29%
Wind Speed S 3 mph
Barometer 30.00 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 28 Feb 3:55 pm CST
Extended Forecast for

4 Miles S Johnsonville IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 62. South wind 3 to 5 mph.

    High: 62 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 31. Light and variable wind becoming north 6 to 11 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 46. North northeast wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 46 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Rain and snow showers likely, mainly after midnight. Cloudy, with a low around 33. East northeast wind 7 to 9 mph. Chance of precipitation is 60%.

    Low: 33 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Monday

    Monday: A 50 percent chance of showers, mainly before noon. Cloudy, with a high near 44. East wind 7 to 9 mph.

    High: 44 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after midnight. Cloudy, with a low around 40. East wind 5 to 8 mph becoming south after midnight. Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 3pm. Cloudy, with a high near 65. South southwest wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely. Cloudy, with a low around 54. South wind around 7 mph.

    Low: 54 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 67. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 67 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 62. South wind 3 to 5 mph.
Tonight
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 31. Light and variable wind becoming north 6 to 11 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Sunday
Increasing clouds, with a high near 46. North northeast wind 9 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Rain and snow showers likely, mainly after midnight. Cloudy, with a low around 33. East northeast wind 7 to 9 mph. Chance of precipitation is 60%.
Monday
A 50 percent chance of showers, mainly before noon. Cloudy, with a high near 44. East wind 7 to 9 mph.
Monday Night
Showers likely, mainly after midnight. Cloudy, with a low around 40. East wind 5 to 8 mph becoming south after midnight. Chance of precipitation is 60%.
Tuesday
Showers likely, with thunderstorms also possible after 3pm. Cloudy, with a high near 65. South southwest wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Cloudy, with a low around 54. South wind around 7 mph.
Wednesday
Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 67. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 55. South southwest wind around 8 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 68. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. South southwest wind around 7 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. South southwest wind 7 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:
3:51 pm CST Feb 28, 2026
Forecast Valid:
4pm CST Feb 28, 2026-6pm CST Mar 6, 2026
 
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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