National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Rain

70°F

21°C

Humidity 96%
Wind Speed W 3 mph
Barometer 30.00 in
Dewpoint 69°F (21°C)
Visibility 7.00 mi
Last update 16 Jun 3:55 am CDT
Extended Forecast for

4 Miles SSE Tunnel Hill IL

Flood Watch June 16, 10:00am until June 17, 12:00am
Click here for hazard details and duration
Flood Watch

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms. Cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Chance
    T-storms

  • Monday

    Monday: Showers and thunderstorms, mainly before 4pm. Some of the storms could produce heavy rainfall. High near 81. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 80%.

    High: 81 °F

    Showers
    Likely then
    Heavy Rain

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 7pm, then showers likely and possibly a thunderstorm between 7pm and 9pm, then a chance of showers and thunderstorms after 9pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 70. South wind 3 to 5 mph. Chance of precipitation is 60%.

    Low: 70 °F

    Heavy Rain

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Cloudy, then gradually becoming mostly sunny, with a high near 85. Southwest wind 5 to 7 mph.

    High: 85 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73. South southwest wind 5 to 7 mph.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88. South southwest wind 9 to 14 mph, with gusts as high as 25 mph.

    High: 88 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    Low: 71 °F

    Showers
    Likely

  • Juneteenth

    Juneteenth: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. West northwest wind around 6 mph.

    High: 85 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms. Cloudy, with a low around 69. Calm wind.
Monday
Showers and thunderstorms, mainly before 4pm. Some of the storms could produce heavy rainfall. High near 81. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 80%.
Monday Night
Showers and thunderstorms likely before 7pm, then showers likely and possibly a thunderstorm between 7pm and 9pm, then a chance of showers and thunderstorms after 9pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 70. South wind 3 to 5 mph. Chance of precipitation is 60%.
Tuesday
A 20 percent chance of showers and thunderstorms. Cloudy, then gradually becoming mostly sunny, with a high near 85. Southwest wind 5 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 73. South southwest wind 5 to 7 mph.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88. South southwest wind 9 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Juneteenth
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. West northwest wind around 6 mph.
Thursday Night
Mostly clear, with a low around 68. Calm wind.
Friday
Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 72. South wind 3 to 5 mph.
Saturday
Sunny, with a high near 91. South southwest wind 5 to 9 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 75. South wind around 6 mph.
Sunday
A slight chance of showers and thunderstorms. Sunny, with a high near 91. South southwest wind 5 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Tunnel Hill IL
 37.51°N 88.85°W
Last Update:
3:31 am CDT Jun 16, 2025
Forecast Valid:
4am CDT Jun 16, 2025-6pm CDT Jun 22, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation