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

52°F

11°C

Humidity 88%
Wind Speed S 10 mph
Barometer 29.84 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 17 Feb 7:15 pm CST
Extended Forecast for

Fairfield IL

  • Tonight

    Tonight: A slight chance of showers between 1am and 5am. Cloudy, with a temperature rising to around 58 by 5am. South wind 13 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

    Low: 53 °F⇑

    Cloudy then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 71. Southwest wind 7 to 14 mph, with gusts as high as 29 mph.

    High: 71 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after midnight. Partly cloudy, with a low around 53. South wind 3 to 6 mph.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers likely, mainly after noon. Partly sunny, with a high near 67. South southwest wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 67 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before midnight. Partly cloudy, with a low around 40. West wind around 11 mph, with gusts as high as 22 mph.

    Low: 40 °F

    Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50. West wind 5 to 13 mph, with gusts as high as 22 mph.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 32. Light and variable wind becoming north around 5 mph after midnight.

    Low: 32 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain and snow showers after noon. Mostly sunny, with a high near 45. North wind 5 to 8 mph.

    High: 45 °F

    Mostly Sunny
    then Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A chance of rain and snow showers before midnight, then a chance of snow showers. Partly cloudy, with a low around 27. North northwest wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 27 °F

    Chance
    Rain/Snow
    then Chance
    Snow Showers

Detailed Forecast

Tonight
A slight chance of showers between 1am and 5am. Cloudy, with a temperature rising to around 58 by 5am. South wind 13 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 71. Southwest wind 7 to 14 mph, with gusts as high as 29 mph.
Wednesday Night
A 30 percent chance of showers after midnight. Partly cloudy, with a low around 53. South wind 3 to 6 mph.
Thursday
Showers likely, mainly after noon. Partly sunny, with a high near 67. South southwest wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers before midnight. Partly cloudy, with a low around 40. West wind around 11 mph, with gusts as high as 22 mph.
Friday
Sunny, with a high near 50. West wind 5 to 13 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 32. Light and variable wind becoming north around 5 mph after midnight.
Saturday
A chance of rain and snow showers after noon. Mostly sunny, with a high near 45. North wind 5 to 8 mph.
Saturday Night
A chance of rain and snow showers before midnight, then a chance of snow showers. Partly cloudy, with a low around 27. North northwest wind 7 to 10 mph, with gusts as high as 21 mph.
Sunday
A slight chance of rain and snow showers before noon. Mostly sunny, with a high near 37. Northwest wind 10 to 15 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 20. Northwest wind 7 to 9 mph.
Monday
Sunny, with a high near 36. North northwest wind 3 to 8 mph.
Monday Night
Partly cloudy, with a low around 19. Calm wind.
Tuesday
Mostly sunny, with a high near 43. Light southeast wind becoming south 5 to 10 mph in the morning.
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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:
5:46 pm CST Feb 17, 2026
Forecast Valid:
7pm CST Feb 17, 2026-6pm CST Feb 24, 2026
 
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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