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

28°F

-2°C

Humidity 60%
Wind Speed NW 10 G 22 mph
Barometer 30.45 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 11 Jan 8:35 am CST
Extended Forecast for

Sims IL

  • Today

    Today: Sunny, with a high near 38. Northwest wind 5 to 14 mph, with gusts as high as 29 mph.

    High: 38 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 25. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 25 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 50. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33. South southwest wind 5 to 8 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 57. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 57 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 38. West wind 6 to 8 mph.

    Low: 38 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers. Mostly cloudy, with a high near 43. Northwest wind 6 to 15 mph, with gusts as high as 22 mph.

    High: 43 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 18. North northwest wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 18 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 35. North northwest wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 35 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 38. Northwest wind 5 to 14 mph, with gusts as high as 29 mph.
Tonight
Mostly clear, with a low around 25. Calm wind becoming south southwest around 6 mph after midnight.
Monday
Sunny, with a high near 50. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 33. South southwest wind 5 to 8 mph.
Tuesday
Mostly sunny, with a high near 57. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 38. West wind 6 to 8 mph.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 43. Northwest wind 6 to 15 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 18. North northwest wind 7 to 10 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 35. North northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Thursday Night
Mostly cloudy, with a low around 25. Light southwest wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 18 mph.
Friday
Partly sunny, with a high near 41. West wind 7 to 14 mph, with gusts as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 22. West wind around 7 mph.
Saturday
Mostly cloudy, with a high near 33. West wind 7 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sims IL
 38.37°N 88.54°W
Last Update:
7:47 am CST Jan 11, 2026
Forecast Valid:
8am CST Jan 11, 2026-6pm CST Jan 17, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation