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.

A Few Clouds

76°F

24°C

Humidity 82%
Wind Speed SW 5 mph
Barometer 30.09 in (1017.6 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 13 Jul 11:53 pm EDT
Extended Forecast for

3 Miles WSW Maryville TN

  • Overnight

    Overnight: Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 5pm.  Mostly sunny and hot, with a high near 91. Heat index values as high as 99. Calm wind becoming west around 5 mph in the afternoon.

    High: 91 °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  in the evening.

    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 93. Heat index values as high as 102. Calm wind becoming west around 5 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 5am, then a slight chance of showers.  Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 40%.

    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 91. Calm wind becoming southwest around 5 mph in the afternoon.  Chance of precipitation is 60%.

    High: 91 °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.  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 60%.

    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 72. Chance of precipitation is 60%.

    Low: 72 °F

    T-storms
    Likely then
    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 71. Calm wind.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny and hot, with a high near 91. Heat index values as high as 99. 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 in the evening.
Tuesday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93. Heat index values as high as 102. Calm wind becoming west around 5 mph.
Tuesday Night
A chance of showers and thunderstorms before 5am, then a slight chance of showers. Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Wednesday
A chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny and hot, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.
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. 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 60%.
Thursday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny and hot, with a high near 90. 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, with a high near 89. 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:
3 Miles WSW Maryville TN
 35.72°N 84.02°W (Elev. 1115 ft)
7:26 pm EDT Jul 13, 2025
12am EDT Jul 14, 2025-6pm EDT Jul 20, 2025
 
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Additional Resources

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