Heavy Rainfall Threat for Portions of Mid-Atlantic and Northeast; Heat Linger for Southeast and Expands for the West

Moisture and nearby frontal boundary will focus more showers and thunderstorms for portions of the Mid-Atlantic and Northeast today. Rainfall could be locally heavy resulting instances of flash flooding. Meanwhile, the heat lingers for areas of the Southeast and expands across the Western U.S. the next several days. Between these areas, severe thunderstorms possible for the Plains and Midwest. Read More >

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

82°F

28°C

Humidity 66%
Wind Speed Vrbl 6 mph
Barometer 30.00 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 6 Jul 12:45 pm CDT
Extended Forecast for

2 Miles SW Marion IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 87. Calm wind becoming north around 5 mph.

    High: 87 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm.  Patchy fog after 3am.  Otherwise, partly cloudy, with a low around 70. Light north wind.

    Low: 70 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm.  Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.  Chance of precipitation is 30%.

    High: 87 °F

    Patchy Fog
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 10 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 89. Light and variable wind.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 93. South southwest wind 5 to 9 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 74. South southwest wind 6 to 8 mph.

    Low: 74 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.  Partly sunny, with a high near 91. Southwest wind 6 to 10 mph.

    High: 91 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 87. Calm wind becoming north around 5 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 70. Light north wind.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 30%.
Tuesday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 69. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 71. Calm wind.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. South southwest wind 5 to 9 mph.
Thursday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 74. South southwest wind 6 to 8 mph.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 91. Southwest wind 6 to 10 mph.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. Southwest wind around 6 mph becoming calm in the evening.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Southwest wind 3 to 6 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light and variable wind.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 90. Calm wind becoming west northwest around 6 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Marion IL
 37.71°N 88.98°W
1:26 pm CDT Jul 6, 2026
1pm CDT Jul 6, 2026-6pm CDT Jul 12, 2026
 
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Additional Resources

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