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.

Overcast

45°F

7°C

Humidity 56%
Wind Speed N 7 mph
Barometer 29.81 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 26 Feb 1:15 am CST
Extended Forecast for

Fairfield IL

  • Overnight

    Overnight: A 40 percent chance of showers, mainly between 2am and 5am. Mostly cloudy, with a low around 35. North northeast wind around 6 mph.

    Low: 35 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 54. Northeast wind around 6 mph becoming calm in the morning.

    High: 54 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. Calm wind.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64. Light south southwest wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 40. South southwest wind 5 to 8 mph becoming north after midnight.

    Low: 40 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 63. North northeast wind 5 to 8 mph becoming south southeast in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Partly cloudy, with a low around 32. North northeast wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 32 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of rain showers before noon, then a chance of rain and snow showers. Mostly cloudy, with a high near 41. Northeast wind around 11 mph, with gusts as high as 21 mph.

    High: 41 °F

    Slight Chance
    Showers then
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow showers likely. Cloudy, with a low around 28. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Rain/Snow
    Likely

Detailed Forecast

Overnight
A 40 percent chance of showers, mainly between 2am and 5am. Mostly cloudy, with a low around 35. North northeast wind around 6 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 54. Northeast wind around 6 mph becoming calm in the morning.
Thursday Night
Mostly clear, with a low around 34. Calm wind.
Friday
Sunny, with a high near 64. Light south southwest wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Clear, with a low around 40. South southwest wind 5 to 8 mph becoming north after midnight.
Saturday
Mostly sunny, with a high near 63. North northeast wind 5 to 8 mph becoming south southeast in the afternoon.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 32. North northeast wind 7 to 10 mph, with gusts as high as 21 mph.
Sunday
A slight chance of rain showers before noon, then a chance of rain and snow showers. Mostly cloudy, with a high near 41. Northeast wind around 11 mph, with gusts as high as 21 mph.
Sunday Night
Rain and snow showers likely. Cloudy, with a low around 28. Northeast wind around 10 mph, with gusts as high as 20 mph.
Monday
A chance of rain and snow showers before noon, then a slight chance of rain showers. Cloudy, with a high near 41. Northeast wind 7 to 10 mph, with gusts as high as 20 mph.
Monday Night
A chance of showers. Mostly cloudy, with a low around 27. East northeast wind around 6 mph.
Tuesday
A chance of showers. Cloudy, with a high near 45. East northeast wind around 7 mph becoming west in the afternoon.
Tuesday Night
A chance of showers. Cloudy, with a low around 33. North wind around 6 mph.
Wednesday
A chance of showers. Mostly cloudy, with a high near 50. East wind around 7 mph.
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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:
12:46 am CST Feb 26, 2026
Forecast Valid:
1am CST Feb 26, 2026-6pm CST Mar 4, 2026
 
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Additional Resources

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Chance of Precipitation