National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Fairfield, Fairfield Municipal Airport (KFWC)

Lat: 38.38°NLon: 88.41°WElev: 436ft.

Fog/Mist

57°F

14°C

Humidity 99%
Wind Speed SE 5 mph
Barometer 29.88 in
Dewpoint 56°F (13°C)
Visibility 1.75 mi
Last update 27 Dec 5:35 pm CST
Extended Forecast for

Fairfield IL

  • Tonight

    Tonight: A 20 percent chance of showers after 5am. Patchy fog between midnight and 5am. Otherwise, cloudy, with a temperature rising to around 64 by 5am. South southwest wind around 9 mph, with gusts as high as 22 mph.

    Low: 57 °F⇑

    Cloudy then
    Slight Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: A chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then showers and possibly a thunderstorm after 5pm. Patchy fog between 8am and 10am. High near 70. Breezy, with a south southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 80%.

    High: 70 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Showers
    and Breezy

  • Sunday Night

    Sunday Night: Rain showers, snow showers, and freezing rain before 4am, then a slight chance of freezing rain between 4am and 5am. Low around 21. Blustery, with a west northwest wind 20 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Blustery.
    Rain/Snow
    then Slight
    Chance Wintry
    Mix

  • Monday

    Monday: Mostly sunny, with a high near 28. Breezy, with a west northwest wind 15 to 21 mph, with gusts as high as 33 mph.

    High: 28 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 16. Northwest wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 31. Northwest wind 5 to 9 mph, with gusts as high as 18 mph.

    High: 31 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23. West southwest wind 3 to 6 mph.

    Low: 23 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 42. West wind 6 to 9 mph.

    High: 42 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 26. West wind around 6 mph.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers after 5am. Patchy fog between midnight and 5am. Otherwise, cloudy, with a temperature rising to around 64 by 5am. South southwest wind around 9 mph, with gusts as high as 22 mph.
Sunday
A chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then showers and possibly a thunderstorm after 5pm. Patchy fog between 8am and 10am. High near 70. Breezy, with a south southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 80%.
Sunday Night
Rain showers, snow showers, and freezing rain before 4am, then a slight chance of freezing rain between 4am and 5am. Low around 21. Blustery, with a west northwest wind 20 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Monday
Mostly sunny, with a high near 28. Breezy, with a west northwest wind 15 to 21 mph, with gusts as high as 33 mph.
Monday Night
Partly cloudy, with a low around 16. Northwest wind 9 to 14 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 31. Northwest wind 5 to 9 mph, with gusts as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 23. West southwest wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 42. West wind 6 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 26. West wind around 6 mph.
New Year's Day
Mostly sunny, with a high near 39. West northwest wind 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around 18. Light north northwest wind.
Friday
Partly sunny, with a high near 38. Light and variable wind becoming west southwest around 6 mph in the morning.
Friday Night
A slight chance of rain or freezing rain. Mostly cloudy, with a low around 28. South wind 3 to 6 mph.
Saturday
A slight chance of showers. Mostly cloudy, with a high near 46. South wind 6 to 8 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:
4:21 pm CST Dec 27, 2025
Forecast Valid:
5pm CST Dec 27, 2025-6pm CST Jan 3, 2026
 
Forecast Discussion
 
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Additional Resources

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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