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

46°F

8°C

Humidity 69%
Wind Speed Calm
Barometer 30.19 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 18 Apr 10:35 pm CDT
Extended Forecast for

4 Miles S Johnsonville IL

  • Tonight

    Tonight: Mostly clear, with a low around 37. West northwest wind around 6 mph becoming calm after midnight.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 65. Light west southwest wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 22 mph.

    High: 65 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. Northwest wind around 6 mph becoming light and variable after midnight.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 63. Light and variable wind becoming east northeast around 5 mph.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46. Calm wind becoming south 5 to 7 mph in the evening.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Southwest wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. Southwest wind 6 to 9 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. South wind around 6 mph.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 37. West northwest wind around 6 mph becoming calm after midnight.
Sunday
Increasing clouds, with a high near 65. Light west southwest wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 39. Northwest wind around 6 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 63. Light and variable wind becoming east northeast around 5 mph.
Monday Night
Mostly clear, with a low around 46. Calm wind becoming south 5 to 7 mph in the evening.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 7 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly clear, with a low around 56. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 77. Southwest wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 59. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 82. South southwest wind 6 to 14 mph, with gusts as high as 21 mph.
Thursday Night
A chance of showers. Partly cloudy, with a low around 62. South wind around 10 mph, with gusts as high as 21 mph.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 76. South wind 10 to 15 mph, with gusts as high as 23 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. Southwest wind around 10 mph becoming northwest after midnight.
Saturday
A slight chance of showers. Mostly sunny, with a high near 70. North northwest wind around 10 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:
8:51 pm CDT Apr 18, 2026
Forecast Valid:
10pm CDT Apr 18, 2026-6pm CDT Apr 25, 2026
 
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Additional Resources

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