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

44°F

7°C

Humidity 46%
Wind Speed W 12 G 18 mph
Barometer 29.92 in
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 20 Feb 12:55 pm CST
Extended Forecast for

Fairfield IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 45. West wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 28. Light northwest wind.

    Low: 28 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 42. North northwest wind 3 to 7 mph.

    High: 42 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 35. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 35 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18. Northwest wind around 11 mph, with gusts as high as 22 mph.

    Low: 18 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 34. North northwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 17. Light and variable wind.

    Low: 17 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 43. Light south southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 45. West wind 6 to 15 mph, with gusts as high as 24 mph.
Tonight
Increasing clouds, with a low around 28. Light northwest wind.
Saturday
Partly sunny, with a high near 42. North northwest wind 3 to 7 mph.
Saturday Night
Mostly clear, with a low around 24. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 35. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 18. Northwest wind around 11 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 34. North northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 17. Light and variable wind.
Tuesday
Mostly sunny, with a high near 43. Light south southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 36. South southwest wind 10 to 13 mph, with gusts as high as 24 mph.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 54. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 34. Southwest wind around 7 mph becoming northwest after midnight.
Thursday
A slight chance of showers. Mostly sunny, with a high near 51. Northwest wind 6 to 8 mph becoming south in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfield IL
 38.38°N 88.37°W
Last Update:
11:42 am CST Feb 20, 2026
Forecast Valid:
12pm CST Feb 20, 2026-6pm CST Feb 26, 2026
 
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