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

73°F

23°C

Humidity 62%
Wind Speed S 13 mph
Barometer 30.07 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 13 Apr 10:15 am CDT
Extended Forecast for

Fairfield IL

  • Today

    Today: Partly sunny, with a high near 82. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.

    High: 82 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 67. South southwest wind 11 to 15 mph, with gusts as high as 28 mph.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a high near 85. South southwest wind 11 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 68. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 83. South southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    High: 83 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. South southwest wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. South southwest wind around 6 mph.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. South wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 82. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.
Tonight
Partly cloudy, with a low around 67. South southwest wind 11 to 15 mph, with gusts as high as 28 mph.
Tuesday
A slight chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a high near 85. South southwest wind 11 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 68. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 83. South southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. South southwest wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Thursday Night
Mostly clear, with a low around 61. South southwest wind around 6 mph.
Friday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. South wind 5 to 11 mph, with gusts as high as 18 mph.
Friday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. South wind 8 to 10 mph, with gusts as high as 21 mph.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 77. South southwest wind 11 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 45. West northwest wind around 9 mph.
Sunday
Mostly sunny, with a high near 62. Northwest wind 8 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfield IL
 38.38°N 88.37°W
Last Update:
9:57 am CDT Apr 13, 2026
Forecast Valid:
10am CDT Apr 13, 2026-6pm CDT Apr 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation