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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

43°F

6°C

Humidity 71%
Wind Speed Vrbl 3 mph
Barometer 30.24 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 6 Nov 8:55 pm CST
Extended Forecast for

4 Miles WNW Simpson IL

Freeze Watch November 7, 11:00pm until November 8, 08:00am
Frost Advisory November 6, 11:00pm until November 7, 08:00am
Click here for hazard details and duration
Freeze Watch
Frost Advisory

  • Tonight

    Tonight: Widespread frost, mainly after 4am. Otherwise, clear, with a low around 33. Light north wind.

    Low: 33 °F

    Clear then
    Frost

  • Saturday

    Saturday: Widespread frost before 8am. Otherwise, increasing clouds, with a high near 55. Light north wind.

    High: 55 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 31. Calm wind.

    Low: 31 °F

    Frost

  • Sunday

    Sunday: Widespread frost before 8am. Otherwise, sunny, with a high near 62. Calm wind becoming west southwest around 6 mph.

    High: 62 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 38. Calm wind.

    Low: 38 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 66. Calm wind becoming southwest around 5 mph.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 42. Calm wind.

    Low: 42 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68. Calm wind becoming west southwest around 5 mph.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Widespread frost, mainly after 4am. Otherwise, clear, with a low around 33. Light north wind.
Saturday
Widespread frost before 8am. Otherwise, increasing clouds, with a high near 55. Light north wind.
Saturday Night
Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 31. Calm wind.
Sunday
Widespread frost before 8am. Otherwise, sunny, with a high near 62. Calm wind becoming west southwest around 6 mph.
Sunday Night
Clear, with a low around 38. Calm wind.
Monday
Sunny, with a high near 66. Calm wind becoming southwest around 5 mph.
Monday Night
Clear, with a low around 42. Calm wind.
Tuesday
Sunny, with a high near 68. Calm wind becoming west southwest around 5 mph.
Tuesday Night
Mostly clear, with a low around 43. Calm wind.
Veterans Day
Mostly sunny, with a high near 66. Calm wind becoming north northwest around 5 mph.
Wednesday Night
Partly cloudy, with a low around 41. Calm wind.
Thursday
Mostly sunny, with a high near 59. Calm wind becoming north northwest 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around 36. Calm wind.
Friday
Sunny, with a high near 58. Calm wind becoming north northwest 5 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Simpson IL
 37.48°N 88.82°W
Last Update:
5:31 pm CST Nov 6, 2026
Forecast Valid:
9pm CST Nov 6, 2026-6pm CST Nov 13, 2026
 
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