National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Storm and Storm Surge Watches for the North Carolina Outer Banks; Hot in the Mid-Mississippi Valley

Tropical Storm conditions and coastal flooding are possible in the North Carolina Outer Banks beginning late Wednesday. Tropical Storm and Storm Surge Watches are in effect. Major Hurricane Erin is expected to bring life threatening surf and rip currents along the East Coast beaches this week. Hot to extremely hot temperatures are forecast through Tuesday in the Mid-Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

77°F

25°C

Humidity 82%
Wind Speed Calm
Barometer 30.04 in (1015.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 19 Aug 1:53 am EDT
Extended Forecast for

Maryville TN

  • Overnight

    Overnight: Mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 92. Heat index values as high as 100. Calm wind becoming northwest around 5 mph.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm.

    Low: 72 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. 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.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 71. North wind around 5 mph becoming calm in the evening.

    Low: 71 °F

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 50%.

    High: 88 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday 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 70. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of thunderstorms, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 86. Chance of precipitation is 50%.

    High: 86 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday Night

    Friday 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

Detailed Forecast

Overnight
Mostly clear, with a low around 71. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 92. Heat index values as high as 100. Calm wind becoming northwest around 5 mph.
Tuesday Night
Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. 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.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 71. North wind around 5 mph becoming calm in the evening.
Thursday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 50%.
Thursday 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 70. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
A slight chance of thunderstorms, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Friday 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%.
Saturday
A slight chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 69. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Monday
Sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville TN
 35.74°N 83.96°W (Elev. 1010 ft)
Last Update:
1:31 am EDT Aug 19, 2025
Forecast Valid:
2am EDT Aug 19, 2025-6pm EDT Aug 25, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation