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.

Fair

84°F

29°C

Humidity 65%
Wind Speed NE 8 mph
Barometer 30.11 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 17 Aug 10:55 am CDT
Extended Forecast for

2 Miles NNW Sims IL

Heat Advisory August 17, 11:04am until August 19, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 17, 11:04am until August 19, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • Today

    High: 96 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 74. Light east northeast wind.

    Low: 74 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 95. Heat index values as high as 105. Calm wind.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Calm wind becoming west around 5 mph in the afternoon.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 87. North northeast wind 3 to 8 mph.

    High: 87 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67. North northeast wind around 6 mph.

    Low: 67 °F

    Partly Cloudy

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Light east northeast wind.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 74. Light east northeast wind.
Monday
Sunny, with a high near 95. Heat index values as high as 105. Calm wind.
Monday Night
Mostly clear, with a low around 74. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 71. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 87. North northeast wind 3 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 67. North northeast wind around 6 mph.
Thursday
Mostly sunny, with a high near 86. North northeast wind 5 to 9 mph.
Thursday Night
Mostly clear, with a low around 66. North northeast wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 88. Calm wind becoming north northeast around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 66. Calm wind.
Saturday
Sunny, with a high near 88. Calm wind becoming north northwest around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Sims IL
 38.39°N 88.54°W
Last Update:
10:30 am CDT Aug 17, 2025
Forecast Valid:
11am CDT Aug 17, 2025-6pm CDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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