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

Heavy Rainfall Across South Texas; Heat in the West

Excessive rainfall may produce locally considerable flash flooding over parts of South Texas, the western Gulf Coast, and Lower Mississippi River Valley through Thursday. Hot temperatures will persist over central and northern California and the Pacific Northwest through today. Read More >

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

58°F

14°C

Humidity 98%
Wind Speed Calm
Barometer 29.92 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 16 Jun 2:55 am CDT
Extended Forecast for

3 Miles SE Tunnel Hill IL

  • Overnight

    Overnight: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly between 3pm and 5pm. Increasing clouds, with a high near 82. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 82 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 61. West southwest wind around 6 mph becoming calm in the evening.

    Low: 61 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. Breezy, with a light south wind becoming south southwest 16 to 21 mph in the morning. Winds could gust as high as 36 mph.

    High: 87 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Partly cloudy, with a low around 73. Breezy, with a south southwest wind 13 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 70%.

    Low: 73 °F

    Chance
    T-storms and
    Breezy then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Southwest wind 7 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Light north wind. Chance of precipitation is 50%.

    Low: 63 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 81. Calm wind becoming north around 6 mph in the morning.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 59. Calm wind.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly between 3pm and 5pm. Increasing clouds, with a high near 82. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 61. West southwest wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 87. Breezy, with a light south wind becoming south southwest 16 to 21 mph in the morning. Winds could gust as high as 36 mph.
Wednesday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Partly cloudy, with a low around 73. Breezy, with a south southwest wind 13 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 70%.
Thursday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Southwest wind 7 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Light north wind. Chance of precipitation is 50%.
Juneteenth
Mostly sunny, with a high near 81. Calm wind becoming north around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 61. Calm wind.
Saturday
Sunny, with a high near 84. Calm wind becoming south southeast around 5 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Calm wind becoming south southeast around 5 mph after midnight.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. South southwest wind 6 to 11 mph, with gusts as high as 24 mph.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. South wind around 10 mph, with gusts as high as 21 mph.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 85. West southwest wind around 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Tunnel Hill IL
 37.53°N 88.85°W
Last Update:
1:55 am CDT Jun 16, 2026
Forecast Valid:
3am CDT Jun 16, 2026-6pm CDT Jun 22, 2026
 
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