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.

Overcast

51°F

11°C

Humidity 54%
Wind Speed NW 5 mph
Barometer 30.07 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 18 Apr 2:55 pm CDT
Extended Forecast for

Fairfield IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers before 4pm. Partly sunny, with a high near 63. Northwest wind around 9 mph, with gusts as high as 22 mph.

    High: 63 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 37. Northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 64. Light west southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 64 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. Northwest wind around 6 mph becoming light and variable after midnight.

    Low: 40 °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 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 7 to 10 mph, with gusts as high as 18 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. West southwest wind 6 to 9 mph.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers before 4pm. Partly sunny, with a high near 63. Northwest wind around 9 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 37. Northwest wind 5 to 9 mph becoming calm after midnight.
Sunday
Increasing clouds, with a high near 64. Light west southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 40. 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 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 7 to 10 mph, with gusts as high as 18 mph.
Wednesday
Mostly sunny, with a high near 78. West 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 13 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 southwest wind 11 to 15 mph, with gusts as high as 23 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:
3:02 pm CDT Apr 18, 2026
Forecast Valid:
3pm CDT Apr 18, 2026-6pm CDT Apr 24, 2026
 
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Additional Resources

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Chance of Precipitation