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

30°F

-1°C

Humidity 62%
Wind Speed SW 7 mph
Barometer 30.08 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 31 Dec 1:15 am CST
Extended Forecast for

4 Miles S Johnsonville IL

  • Overnight

    Overnight: Mostly clear, with a low around 25. West wind around 7 mph.

    Low: 25 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 40. West wind 6 to 10 mph.

    High: 40 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 25. West southwest wind around 6 mph becoming light and variable.

    Low: 25 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 37. North 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 6 mph in the afternoon.

    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 6 mph.

    High: 39 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 25. West wind around 7 mph.
Wednesday
Partly sunny, with a high near 40. West wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 25. West southwest wind around 6 mph becoming light and variable.
New Year's Day
Mostly sunny, with a high near 37. North 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 6 mph in the afternoon.
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 6 mph.
Saturday Night
Mostly clear, with a low around 22. Calm wind.
Sunday
Partly sunny, with a high near 42. Calm wind becoming south around 5 mph.
Sunday Night
Partly cloudy, with a low around 31. South wind 3 to 6 mph.
Monday
Partly sunny, with a high near 54. South southwest wind 6 to 8 mph.
Monday Night
Mostly cloudy, with a low around 36. South wind around 5 mph becoming west after midnight.
Tuesday
Partly sunny, with a high near 52. West wind 3 to 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Johnsonville IL
 38.45°N 88.54°W
Last Update:
12:46 am CST Dec 31, 2025
Forecast Valid:
1am 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation