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

85°F

29°C

Humidity 48%
Wind Speed S 14 G 22 mph
Barometer 29.90 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 14 Apr 4:35 pm CDT
Extended Forecast for

4 Miles S Johnsonville IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 86. South southwest wind around 16 mph, with gusts as high as 24 mph.

    High: 86 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 68 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 83. South southwest wind 10 to 17 mph, with gusts as high as 25 mph.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • 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. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 64 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 78. South southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 78 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 7pm. Mostly clear, with a low around 60. South southwest wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 60 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 63. South wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 74. South southwest wind 10 to 17 mph becoming west in the afternoon. Winds could gust as high as 24 mph.

    High: 74 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 86. South southwest wind around 16 mph, with gusts as high as 24 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 83. South southwest wind 10 to 17 mph, with gusts as high as 25 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. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 78. South southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Thursday Night
A chance of thunderstorms before 7pm. Mostly clear, with a low around 60. South southwest wind 3 to 6 mph. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Friday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 63. South wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 74. South southwest wind 10 to 17 mph becoming west in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
A chance of showers, mainly before 1am. Partly cloudy, with a low around 41. West northwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 60. West northwest wind 8 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 38. Northwest wind 3 to 7 mph.
Monday
Sunny, with a high near 66. Northeast wind 5 to 7 mph becoming south in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Johnsonville IL
 38.45°N 88.54°W
Last Update:
1:42 pm CDT Apr 14, 2026
Forecast Valid:
4pm CDT Apr 14, 2026-6pm CDT Apr 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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