Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

77°F

25°C

Humidity 64%
Wind Speed N 7 mph
Barometer 29.92 in (1011.8 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 29 Jul 9:53 pm EDT
Extended Forecast for

Maryville TN

  • Tonight

    Tonight: Mostly clear, with a low around 64. Northeast wind around 5 mph.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Northeast wind 5 to 10 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88. Northeast wind around 5 mph becoming calm.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67. North wind around 5 mph becoming calm.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm.  Mostly cloudy, with a high near 85. Calm wind becoming south around 5 mph in the afternoon.  Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm.  Low around 70. South wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 80%.

    Low: 70 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm.  High near 85. Chance of precipitation is 80%.

    High: 85 °F

    Showers
    Likely then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am.  Low around 69. Chance of precipitation is 80%.

    Low: 69 °F

    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 64. Northeast wind around 5 mph.
Thursday
Sunny, with a high near 84. Northeast wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 62. Northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 88. Northeast wind around 5 mph becoming calm.
Friday Night
Partly cloudy, with a low around 67. North wind around 5 mph becoming calm.
Saturday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
Showers and possibly a thunderstorm. Low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Sunday
Showers and possibly a thunderstorm. High near 85. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Low around 69. Chance of precipitation is 80%.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville TN
 35.76°N 83.96°W (Elev. 994 ft)
7:06 pm EDT Jul 29, 2026
10pm EDT Jul 29, 2026-6pm EDT Aug 5, 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