Dangerous Surf and Rip Currents for most of the Atlantic Shoreline; Record Heat for the West

Hurricane Erin continues to track northward. Tropical storm force winds, storm surge conditions will increase for the Outer Banks today and portions of coastal Virginia. Life-threatening surf and rip currents along much of the east coast of the U.S. this week. Major to extreme HeatRisk with new record high temperatures are expected for many areas of the western U.S. this week. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

73°F

23°C

Humidity 90%
Wind Speed SW 3 mph
Barometer 30.00 in (1014.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 20 Aug 6:53 am EDT
Extended Forecast for

4 Miles SE Maryville TN

  • Today

    Today: Showers and thunderstorms likely, mainly after 3pm.  Mostly sunny and hot, with a high near 90. Heat index values as high as 98. Calm wind becoming northwest around 5 mph in the afternoon.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Mostly Sunny
    then T-storms
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight.  Mostly cloudy, with a low around 71. Northwest wind around 5 mph becoming calm.  Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 87. Calm wind becoming northeast around 5 mph in the morning.

    High: 87 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 10 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 69. North wind around 5 mph becoming calm  in the evening.

    Low: 69 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 87. Calm wind.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am.  Partly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm.  Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of thunderstorms, then a chance of showers and thunderstorms after 8am.  Mostly sunny, with a high near 86. Calm wind becoming west around 5 mph.  Chance of precipitation is 50%.

    High: 86 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers.  Partly cloudy, with a low around 69. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 8am.  Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 3pm. Mostly sunny and hot, with a high near 90. Heat index values as high as 98. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Mostly cloudy, with a low around 71. Northwest wind around 5 mph becoming calm. Chance of precipitation is 30%.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Calm wind becoming northeast around 5 mph in the morning.
Thursday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. North wind around 5 mph becoming calm in the evening.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Calm wind.
Friday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Saturday
A slight chance of thunderstorms, then a chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 86. Calm wind becoming west around 5 mph. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Sunday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 64.
Monday
Sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Maryville TN
 35.71°N 83.94°W (Elev. 988 ft)
7:07 am EDT Aug 20, 2025
7am EDT Aug 20, 2025-6pm EDT Aug 26, 2025
 
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Additional Resources

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