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

36°F

2°C

Humidity 99%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 19 Apr 6:15 am CDT
Extended Forecast for

Fairfield IL

  • Today

    Today: Sunny, with a high near 65. Light and variable wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: 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 64. Light and variable 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 5 to 7 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 8 to 10 mph, with gusts as high as 18 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

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

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. South southwest wind around 6 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. South wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 82 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 65. Light and variable wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Tonight
Partly cloudy, with a low around 39. Northwest wind around 6 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 64. Light and variable wind becoming east northeast around 5 mph.
Monday Night
Mostly clear, with a low around 47. Calm wind becoming south 5 to 7 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 8 to 10 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 77. West southwest wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 58. South southwest wind around 6 mph.
Thursday
Sunny, with a high near 82. South wind 6 to 14 mph, with gusts as high as 22 mph.
Thursday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. South wind around 10 mph, with gusts as high as 20 mph.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 79. South wind 11 to 15 mph, with gusts as high as 23 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 53. Southwest wind around 9 mph becoming northwest after midnight.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 70. North northwest wind 9 to 11 mph, with gusts as high as 18 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:
6:11 am CDT Apr 19, 2026
Forecast Valid:
6am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation