National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Fairfield, Fairfield Municipal Airport (KFWC)

Lat: 38.38°NLon: 88.41°WElev: 436ft.

Fog

73°F

23°C

Humidity 99%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 73°F (23°C)
Visibility 0.25 mi
Last update 28 Jun 6:15 am CDT
Extended Forecast for

Fairfield IL

Extreme Heat Watch June 29, 11:00am until July 2, 08:00pm
Flood Watch June 28, 06:31am until June 28, 07:00am
Heat Advisory June 28, 12:00pm until June 28, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch
...
Heat Advisory
  •  
    Flood Watch June 28, 06:31am until June 28, 07:00am

    NOW until 7:00am Sun

    Flood Watch

  • Today

    High: 91 °F

    Chance
    T-storms then
    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 74. South wind 3 to 5 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93. Heat index values as high as 105. Light south southwest wind increasing to 5 to 9 mph in the morning.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. South wind 3 to 7 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. South southwest wind 3 to 6 mph.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 74. South wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 95. Light south southwest wind.

    High: 95 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. Light south wind.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Today
A chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and 10am. Mostly sunny, with a high near 91. Calm wind becoming south southwest around 6 mph in the morning. Chance of precipitation is 30%.
Tonight
Mostly clear, with a low around 74. South wind 3 to 5 mph.
Monday
Sunny, with a high near 93. Heat index values as high as 105. Light south southwest wind increasing to 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 74. South wind 3 to 7 mph.
Tuesday
Sunny, with a high near 95. South southwest wind 3 to 6 mph.
Tuesday Night
Clear, with a low around 74. South wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 95. Light south southwest wind.
Wednesday Night
Mostly clear, with a low around 75. Light south wind.
Thursday
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 75. Calm wind.
Friday
A slight chance of showers and thunderstorms. Sunny, with a high near 93. Light and variable wind.
Friday Night
Partly cloudy, with a low around 74. Calm wind.
Independence Day
A slight chance of showers and thunderstorms. Sunny, with a high near 93. Light and variable wind.
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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:
1:26 am CDT Jun 28, 2026
Forecast Valid:
6am CDT Jun 28, 2026-6pm CDT Jul 4, 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