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.

Fair

67°F

19°C

Humidity 84%
Wind Speed N 3 mph
Barometer 29.97 in (1013.7 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 30 Jul 5:53 am EDT
Extended Forecast for

Maryville TN

  • Today

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

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. Northeast wind around 5 mph.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 89. Northeast wind around 5 mph becoming calm.

    High: 89 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 68. East wind around 5 mph becoming calm.

    Low: 68 °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 86. Light south wind increasing to 5 to 10 mph in the afternoon.  Chance of precipitation is 60%.

    High: 86 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm.  Low around 71. South wind around 5 mph.  Chance of precipitation is 80%.

    Low: 71 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm.  High near 85. Southwest wind around 5 mph.  Chance of precipitation is 80%.

    High: 85 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am.  Low around 71. Chance of precipitation is 80%.

    Low: 71 °F

    Showers then
    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm.  Mostly cloudy, with a high near 86. Chance of precipitation is 60%.

    High: 86 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 84. Northeast wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 63. Northeast wind around 5 mph.
Friday
Mostly sunny, with a high near 89. Northeast wind around 5 mph becoming calm.
Friday Night
Partly cloudy, with a low around 68. East 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 86. Light south wind increasing to 5 to 10 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
Showers and possibly a thunderstorm. Low around 71. South wind around 5 mph. Chance of precipitation is 80%.
Sunday
Showers and possibly a thunderstorm. High near 85. Southwest wind around 5 mph. 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. Low around 71. Chance of precipitation is 80%.
Monday
A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Tuesday
Showers and thunderstorms likely. 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
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 89. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville TN
 35.74°N 83.99°W (Elev. 1001 ft)
2:26 am EDT Jul 30, 2026
5am EDT Jul 30, 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