Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

68°F

20°C

Humidity 98%
Wind Speed S 6 mph
Barometer 29.92 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 27 May 1:35 am CDT
Extended Forecast for

Colp IL

  • Overnight

    Overnight: A slight chance of showers between 2am and 3am.  Patchy fog between 3am and 4am.  Otherwise, mostly cloudy, with a low around 64. Calm wind.  Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 83. Calm wind becoming west around 6 mph in the morning.

    High: 83 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 7pm.  Patchy fog after 4am.  Otherwise, partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Chance
    T-storms then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 7am.  Otherwise, partly sunny, with a high near 83. Calm wind becoming east northeast 5 to 9 mph in the morning.

    High: 83 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am.  Mostly cloudy, with a low around 64. East northeast wind around 6 mph.  Chance of precipitation is 20%.

    Low: 64 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 79. East wind around 7 mph.  Chance of precipitation is 30%.

    High: 79 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am.  Mostly cloudy, with a low around 63. East northeast wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 30%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 82. Calm wind becoming east northeast 5 to 7 mph in the morning.

    High: 82 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62. East northeast wind 3 to 6 mph.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of showers between 2am and 3am. Patchy fog between 3am and 4am. Otherwise, mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 20%.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Calm wind becoming west around 6 mph in the morning.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 7pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 64. Calm wind.
Thursday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 83. Calm wind becoming east northeast 5 to 9 mph in the morning.
Thursday Night
A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 64. East northeast wind around 6 mph. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 79. East wind around 7 mph. Chance of precipitation is 30%.
Friday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 63. East northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 82. Calm wind becoming east northeast 5 to 7 mph in the morning.
Saturday Night
Partly cloudy, with a low around 62. East northeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 79. East northeast wind 7 to 9 mph.
Sunday Night
Partly cloudy, with a low around 59. East northeast wind 5 to 7 mph becoming calm in the evening.
Monday
Sunny, with a high near 81. Light northeast wind increasing to 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 59. Northeast wind 5 to 8 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 81. Light north northeast wind becoming east northeast 5 to 10 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
Colp IL
 37.83°N 89.08°W
1:21 am CDT May 27, 2026
1am CDT May 27, 2026-6pm CDT Jun 2, 2026
 
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