Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

84°F

29°C

Humidity 48%
Wind Speed SW 13 G 22 mph
Barometer 29.84 in (1009.2 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 17 Jun 2:53 pm EDT
Extended Forecast for

6 Miles SSW Maryville TN

  • This Afternoon

    This Afternoon: Sunny, with a high near 88. Southwest wind around 10 mph.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 73. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 73 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.  Mostly cloudy, with a high near 86. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Breezy.
    Slight Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am.  Low around 69. Southwest wind 5 to 10 mph becoming light  in the evening.  Chance of precipitation is 80%.

    Low: 69 °F

    Chance
    T-storms then
    Showers

  • Juneteenth

    Juneteenth: Showers likely, with thunderstorms also possible after 11am.  Partly sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon.  Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 63. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 86. Calm wind becoming northeast around 5 mph.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny, with a high near 87.

    High: 87 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 88. Southwest wind around 10 mph.
Tonight
Increasing clouds, with a low around 73. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 86. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 69. Southwest wind 5 to 10 mph becoming light in the evening. Chance of precipitation is 80%.
Juneteenth
Showers likely, with thunderstorms also possible after 11am. Partly sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Friday Night
Mostly cloudy, with a low around 63. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 86. Calm wind becoming northeast around 5 mph.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 87.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.
Monday
Showers and possibly a thunderstorm. High near 84. Breezy. Chance of precipitation is 90%.
Monday Night
Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 80%.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSW Maryville TN
 35.67°N 84.03°W (Elev. 1001 ft)
2:26 pm EDT Jun 17, 2026
3pm EDT Jun 17, 2026-6pm EDT Jun 23, 2026
 
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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