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.

Partly Cloudy

28°F

-2°C

Humidity 80%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 31 Dec 8:35 am CST
Extended Forecast for

Fairfield IL

  • Today

    Today: Partly sunny, with a high near 40. West northwest wind 6 to 9 mph.

    High: 40 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 25. West southwest wind around 5 mph becoming light and variable in the evening.

    Low: 25 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 37. Northeast wind around 5 mph becoming calm in the morning.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 43. Calm wind becoming northeast around 5 mph.

    High: 43 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 24. North northeast wind 3 to 5 mph.

    Low: 24 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 39. North northeast wind 3 to 5 mph.

    High: 39 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 22. Calm wind.

    Low: 22 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 42. Light and variable wind.

    High: 42 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 40. West northwest wind 6 to 9 mph.
Tonight
Partly cloudy, with a low around 25. West southwest wind around 5 mph becoming light and variable in the evening.
New Year's Day
Mostly sunny, with a high near 37. Northeast wind around 5 mph becoming calm in the morning.
Thursday Night
Mostly cloudy, with a low around 27. Calm wind.
Friday
Mostly cloudy, with a high near 43. Calm wind becoming northeast around 5 mph.
Friday Night
Mostly cloudy, with a low around 24. North northeast wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 39. North northeast wind 3 to 5 mph.
Saturday Night
Mostly clear, with a low around 22. Calm wind.
Sunday
Partly sunny, with a high near 42. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 31. Calm wind becoming south around 6 mph after midnight.
Monday
Partly sunny, with a high near 53. South southwest wind 5 to 7 mph.
Monday Night
Mostly cloudy, with a low around 36. Light and variable wind becoming south southwest around 5 mph.
Tuesday
Partly sunny, with a high near 52. West wind 3 to 6 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfield IL
 38.38°N 88.37°W
Last Update:
4:32 am CST Dec 31, 2025
Forecast Valid:
8am CST Dec 31, 2025-6pm CST Jan 6, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation