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

66°F

19°C

Humidity 66%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 11 Oct 8:15 pm CDT
Extended Forecast for

Sims IL

  • Tonight

    Tonight: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 91. Light south southwest wind becoming southwest 8 to 13 mph in the morning.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 66. South southwest wind around 7 mph.

    Low: 66 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. Southwest wind 6 to 10 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 69. South southwest wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 69 °F

    Mostly Clear
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 85. Calm wind becoming southwest around 6 mph in the morning. Chance of precipitation is 80%.

    High: 85 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 70%.

    Low: 63 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. East northeast wind 5 to 8 mph becoming southeast in the afternoon.

    High: 80 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Southeast wind 7 to 11 mph becoming west northwest after midnight.

    Low: 55 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 59. Calm wind.
Columbus Day
Sunny, with a high near 91. Light south southwest wind becoming southwest 8 to 13 mph in the morning.
Monday Night
Clear, with a low around 66. South southwest wind around 7 mph.
Tuesday
Sunny, with a high near 93. Southwest wind 6 to 10 mph.
Tuesday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 69. South southwest wind 3 to 6 mph. Chance of precipitation is 30%.
Wednesday
Showers and possibly a thunderstorm. High near 85. Calm wind becoming southwest around 6 mph in the morning. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 70%.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. East northeast wind 5 to 8 mph becoming southeast in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Southeast wind 7 to 11 mph becoming west northwest after midnight.
Friday
Partly sunny, with a high near 68. Breezy, with a northwest wind 15 to 22 mph, with gusts as high as 26 mph.
Friday Night
Mostly clear, with a low around 38. North northwest wind 9 to 18 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 60. North wind 8 to 11 mph.
Saturday Night
Clear, with a low around 34. Calm wind.
Sunday
Sunny, with a high near 67. Calm wind becoming south around 6 mph in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sims IL
 38.37°N 88.54°W
Last Update:
2:01 pm CDT Oct 11, 2026
Forecast Valid:
8pm CDT Oct 11, 2026-6pm CDT Oct 18, 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