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

62°F

17°C

Humidity 29%
Wind Speed W 12 G 18 mph
Barometer 30.23 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 19 Apr 1:55 pm CDT
Extended Forecast for

Fairfield IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 65. West wind 8 to 10 mph, with gusts as high as 22 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 40. West wind around 6 mph becoming light and variable after midnight.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 64. Calm wind becoming east northeast around 5 mph.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. Calm wind becoming south southeast around 6 mph in the evening.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Southwest wind 7 to 14 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 20 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Southwest wind 6 to 9 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. South wind around 6 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. South wind 7 to 17 mph, with gusts as high as 24 mph.

    High: 80 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 65. West wind 8 to 10 mph, with gusts as high as 22 mph.
Tonight
Partly cloudy, with a low around 40. West wind around 6 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 64. Calm wind becoming east northeast around 5 mph.
Monday Night
Mostly clear, with a low around 47. Calm wind becoming south southeast around 6 mph in the evening.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 7 to 14 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 20 mph.
Wednesday
Sunny, with a high near 78. Southwest wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 57. South wind around 6 mph.
Thursday
Sunny, with a high near 80. South wind 7 to 17 mph, with gusts as high as 24 mph.
Thursday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. South wind 11 to 13 mph, with gusts as high as 23 mph.
Friday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 76. South southwest wind 13 to 15 mph, with gusts as high as 23 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. West wind 6 to 8 mph becoming north after midnight.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 71. North wind around 9 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:
2:06 pm CDT Apr 19, 2026
Forecast Valid:
2pm CDT Apr 19, 2026-6pm CDT Apr 25, 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