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

53°F

12°C

Humidity 46%
Wind Speed NW 6 mph
Barometer 30.28 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 5 Apr 7:35 pm CDT
Extended Forecast for

Fairfield IL

  • Tonight

    Tonight: Clear, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 63. Northwest wind 5 to 9 mph.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40. North wind 6 to 8 mph.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 53. East northeast wind around 8 mph.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39. East wind around 6 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. South wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers after 1pm. Mostly sunny, with a high near 71. South southwest wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 71 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 56. South wind around 6 mph.

    Low: 56 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 63. Northwest wind 5 to 9 mph.
Monday Night
Partly cloudy, with a low around 40. North wind 6 to 8 mph.
Tuesday
Partly sunny, with a high near 53. East northeast wind around 8 mph.
Tuesday Night
Partly cloudy, with a low around 39. East wind around 6 mph.
Wednesday
Mostly sunny, with a high near 72. South wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 52. South wind 7 to 10 mph, with gusts as high as 20 mph.
Thursday
A slight chance of showers after 1pm. Mostly sunny, with a high near 71. South southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Thursday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 56. South wind around 6 mph.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. South southwest wind 6 to 9 mph.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Northeast wind around 5 mph becoming east southeast after midnight.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. East southeast wind 6 to 8 mph becoming south in the afternoon.
Saturday Night
A slight chance of showers. Mostly cloudy, with a low around 60. South southeast wind around 7 mph.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. South wind 8 to 13 mph, with gusts as high as 21 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:
4:47 pm CDT Apr 5, 2026
Forecast Valid:
7pm CDT Apr 5, 2026-6pm CDT Apr 12, 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