Active Weather Pattern Across the Northwestern and Central U.S.

Scattered severe thunderstorms are expected to develop across portions of the central and northern High Plains Sunday afternoon and linger into Sunday evening. Severe winds, large to very large hail and heavy rain will be possible. A late season atmospheric river event will kick-off Sunday across the Pacific Northwest bringing strong winds and moderate to heavy rain through early next week. Read More >

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

65°F

18°C

Humidity 94%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 3 Jun 3:15 am CDT
Extended Forecast for

Simpson IL

  • Overnight

    Overnight: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 87. Calm wind becoming south 5 to 9 mph in the morning.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 9pm.  Mostly cloudy, with a low around 67. South southeast wind 3 to 6 mph.

    Low: 67 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 83. South wind 6 to 9 mph.

    High: 83 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 68. South wind 5 to 7 mph.  Chance of precipitation is 70%.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 84. South southwest wind 7 to 9 mph becoming west northwest in the afternoon.  Chance of precipitation is 70%.

    High: 84 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62. Light west northwest wind.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86. Calm wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 63. Calm wind.
Monday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. Calm wind becoming south 5 to 9 mph in the morning.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after 9pm. Mostly cloudy, with a low around 67. South southeast wind 3 to 6 mph.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83. South wind 6 to 9 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. South wind 5 to 7 mph. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. South southwest wind 7 to 9 mph becoming west northwest in the afternoon. Chance of precipitation is 70%.
Wednesday Night
Mostly clear, with a low around 62. Light west northwest wind.
Thursday
Sunny, with a high near 86. Calm wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
Mostly clear, with a low around 60. Northwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 82. Calm wind becoming northwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Friday Night
Mostly clear, with a low around 59. North northwest wind around 5 mph becoming calm in the evening.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Calm wind becoming west 5 to 7 mph in the morning.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. Light southwest wind.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. Calm wind becoming west northwest 5 to 7 mph in the morning.
Click Map For Forecast

ABOUT THIS FORECAST

 
Point Forecast:
Simpson IL
 37.46°N 88.77°W
2:45 am CDT Jun 3, 2024
3am CDT Jun 3, 2024-6pm CDT Jun 9, 2024
 
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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