Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Fair

82°F

28°C

Humidity 65%
Wind Speed W 8 mph
Barometer 30.06 in (1016.6 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 13 Jul 6:53 pm EDT
Extended Forecast for

Maryville TN

  • Tonight

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

    Low: 71 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 5pm.  Mostly sunny and hot, with a high near 92. Heat index values as high as 100. Calm wind becoming west around 5 mph in the afternoon.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 72. Northwest wind around 5 mph becoming calm.

    Low: 72 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 94. Heat index values as high as 102. Calm wind.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly before 2am.  Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers and thunderstorms likely after 11am.  Mostly sunny and hot, with a high near 93. Calm wind becoming southwest around 5 mph.  Chance of precipitation is 70%.

    High: 93 °F

    Chance
    Showers then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 2am, then a slight chance of showers.  Partly cloudy, with a low around 73. South wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 60%.

    Low: 73 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, then showers and thunderstorms likely after 8am.  Mostly sunny and hot, with a high near 91. Chance of precipitation is 70%.

    High: 91 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before 8pm.  Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    T-storms
    Likely then
    Chance
    T-storms

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 71. West wind around 5 mph becoming calm in the evening.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny and hot, with a high near 92. Heat index values as high as 100. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 72. Northwest wind around 5 mph becoming calm.
Tuesday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 94. Heat index values as high as 102. Calm wind.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm.
Wednesday
A chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny and hot, with a high near 93. Calm wind becoming southwest around 5 mph. Chance of precipitation is 70%.
Wednesday Night
Showers and thunderstorms likely before 2am, then a slight chance of showers. Partly cloudy, with a low around 73. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Thursday
A slight chance of showers, then showers and thunderstorms likely after 8am. Mostly sunny and hot, with a high near 91. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny and hot, with a high near 91. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Partly sunny and hot, with a high near 91. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville TN
 35.76°N 83.96°W (Elev. 994 ft)
7:26 pm EDT Jul 13, 2025
7pm EDT Jul 13, 2025-6pm EDT Jul 20, 2025
 
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