Southwest Monsoon Continues; Western Heat Wave Builds

Monsoonal thunderstorms will continue to bring a potential for flash flooding across the Desert Southwest and Four Corners region through at least Monday. Winds from these storms may produce blowing dust that could reduce visibility creating hazardous driving conditions. Meanwhile, scorching heat and critical fire weather conditions persist across parts of the West. Read More >

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Mostly Cloudy

84°F

29°C

Humidity 79%
Wind Speed S 6 mph
Barometer 30.00 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 15 Jul 1:45 pm CDT
Extended Forecast for

Marion IL

  • This
    Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 90. Southwest wind around 7 mph.

    Chance
    T-storms

    High: 90 °F

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 74. South southwest wind 3 to 5 mph.

    Chance
    T-storms

    Low: 74 °F

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 91. West wind 3 to 7 mph.

    Mostly Sunny
    then Chance
    T-storms

    High: 91 °F

  • Monday
    Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 72. Northwest wind 3 to 5 mph.

    Slight Chance
    T-storms

    Low: 72 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89. North northeast wind 5 to 8 mph.

    Mostly Sunny

    High: 89 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 68. Northeast wind 3 to 6 mph.

    Mostly Clear

    Low: 68 °F

  • Wednesday

    Wednesday: Sunny, with a high near 86. East northeast wind around 6 mph.

    Sunny

    High: 86 °F

  • Wednesday
    Night

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

    Partly Cloudy

    Low: 67 °F

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly before 1pm.  Partly sunny, with a high near 86. South southeast wind 5 to 8 mph.

    Chance
    T-storms

    High: 86 °F

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Southwest wind around 7 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 74. South southwest wind 3 to 5 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. West wind 3 to 7 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Northwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 89. North northeast wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 68. Northeast wind 3 to 6 mph.
Wednesday
Sunny, with a high near 86. East northeast wind around 6 mph.
Wednesday Night
Partly cloudy, with a low around 67. East northeast wind around 6 mph.
Thursday
A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 86. South southeast wind 5 to 8 mph.
Thursday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 70. South wind 5 to 7 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. South southwest wind 6 to 10 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. South wind 5 to 7 mph becoming west after midnight.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. West northwest wind 6 to 9 mph.
Click Map For Forecast
Point Forecast:
Marion IL
 37.73°N 88.92°W
1:44 pm CDT Jul 15, 2018
2pm CDT Jul 15, 2018-6pm CDT Jul 21, 2018
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database