Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Mostly Cloudy

91°F

33°C

Humidity 67%
Wind Speed W 7 mph
Barometer 29.96 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 26 Jul 12:45 pm CDT
Extended Forecast for

3 Miles SSE West City IL

Extreme Heat Warning until July 28, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning until July 28, 07:00pm

    NOW until 7:00pm Tue

    Extreme Heat Warning

  • This Afternoon

    High: 93 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am.  Mostly cloudy, then becoming mostly clear toward daybreak, with a low around 78. Calm wind.  Chance of precipitation is 60%.

    Low: 78 °F

    Showers
    Likely then
    Chance
    T-storms

  • Monday

    Monday: Sunny and hot, with a high near 100. Heat index values as high as 112. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. South southwest wind 6 to 9 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Northwest wind 5 to 10 mph.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 71. North wind 5 to 9 mph becoming light north northwest  in the evening.

    Low: 71 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 90. North northeast wind 3 to 8 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 66. North northeast wind around 6 mph becoming calm  in the evening.

    Low: 66 °F

    Clear

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a steady temperature around 93. Heat index values as high as 115. Calm wind becoming southwest around 6 mph.
Tonight
Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, then becoming mostly clear toward daybreak, with a low around 78. Calm wind. Chance of precipitation is 60%.
Monday
Sunny and hot, with a high near 100. Heat index values as high as 112. Calm wind becoming south 5 to 8 mph in the afternoon.
Monday Night
Mostly clear, with a low around 79. South southwest wind 6 to 9 mph.
Tuesday
Sunny, with a high near 95. Northwest wind 5 to 10 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. North wind 5 to 9 mph becoming light north northwest in the evening.
Wednesday
Sunny, with a high near 90. North northeast wind 3 to 8 mph.
Wednesday Night
Clear, with a low around 66. North northeast wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 90. Calm wind becoming northeast around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 68. Light and variable wind.
Friday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Southeast wind around 6 mph becoming calm in the evening.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming north 5 to 9 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE West City IL
 37.96°N 88.94°W
1:21 pm CDT Jul 26, 2026
1pm CDT Jul 26, 2026-6pm CDT Aug 1, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database