Severe Weather and Flooding Threat in the Central U.S. and Mid-Atlantic; Dangerous Heat in the West and Southern Plains

Severe thunderstorms and heavy rain are expected across the central High Plains into parts of the central and southern Plains and in the the Mid-Atlantic today. Intense, dangerous heat will persist across the West, Southwest, and Southern Plains into the end of the week. Elevated to critical fire weather conditions expected in the Great Basin and Four Corners region. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

73°F

23°C

Humidity 69%
Wind Speed W 12 mph
Barometer 30.08 in (1017.8 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 23 Jun 11:53 am EDT
Extended Forecast for

Maryville TN

  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly before 1pm.  Partly sunny, with a high near 79. Northwest wind around 10 mph.

    High: 79 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 59. North wind around 5 mph becoming calm  in the evening.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 83. Calm wind becoming northeast around 5 mph.

    High: 83 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 63 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 89. Calm wind becoming west around 5 mph in the afternoon.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm.

    Low: 69 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny and hot, with a high near 90. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 90 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 73. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 8am.  Mostly sunny and hot, with a high near 90. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 79. Northwest wind around 10 mph.
Tonight
Mostly clear, with a low around 59. North wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 83. Calm wind becoming northeast around 5 mph.
Wednesday Night
Partly cloudy, with a low around 63. Calm wind.
Thursday
Sunny, with a high near 89. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 90. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Saturday
A chance of showers, with thunderstorms also possible after 8am. Mostly sunny and hot, with a high near 90. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 50%.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
Sunday Night
A 10 percent chance of showers. Mostly clear, with a low around 72.
Monday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville TN
 35.76°N 83.99°W (Elev. 886 ft)
7:06 am EDT Jun 23, 2026
12pm EDT Jun 23, 2026-6pm EDT Jun 29, 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