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

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

88°F

31°C

Humidity 46%
Wind Speed E 6 mph
Barometer 30.03 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 30 Jul 2:45 pm CDT
Extended Forecast for

West City IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 89. East wind around 6 mph.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 66. East wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 4pm. Increasing clouds, with a high near 90. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 40%.

    High: 90 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 69. Southeast wind around 9 mph becoming south southwest after midnight. Chance of precipitation is 80%.

    Low: 69 °F

    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms before 1pm, then showers likely between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 83. West southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Northwest wind 8 to 13 mph. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. North wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

    High: 83 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 65. North wind 6 to 11 mph becoming light in the evening.

    Low: 65 °F

    Slight Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. North northeast wind 3 to 7 mph.

    High: 86 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 89. East wind around 6 mph.
Tonight
Mostly cloudy, with a low around 66. East wind around 5 mph becoming calm in the evening.
Friday
A chance of showers, with thunderstorms also possible after 4pm. Increasing clouds, with a high near 90. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 40%.
Friday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 69. Southeast wind around 9 mph becoming south southwest after midnight. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms before 1pm, then showers likely between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 83. West southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Northwest wind 8 to 13 mph. Chance of precipitation is 40%.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. North wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Sunday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 65. North wind 6 to 11 mph becoming light in the evening.
Monday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. North northeast wind 3 to 7 mph.
Monday Night
Mostly clear, with a low around 66. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms. Sunny, with a high near 89. Calm wind becoming north northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 68. Light north wind.
Wednesday
A slight chance of showers and thunderstorms. Sunny, with a high near 92. Calm wind becoming northwest around 5 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
West City IL
 38°N 88.96°W
Last Update:
12:11 pm CDT Jul 30, 2026
Forecast Valid:
3pm CDT Jul 30, 2026-6pm CDT Aug 5, 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