Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Heat Building in the Western U.S.

A cold front pressing east across the central U.S. will be the focus for areas of strong to severe thunderstorms and excessive rainfall through this weekend. Strong to severe thunderstorms my bring damaging winds, hail, and a few tornadoes while excessive rainfall may lead to areas of flooding. Heat will build across the western U.S. with heat-related watches, warnings, and advisories issued. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

74°F

23°C

Humidity 91%
Wind Speed Calm
Barometer 30.10 in (1018.0 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 13 Jul 12:53 am EDT
Extended Forecast for

Knoxville, McGhee Tyson Airport TN

  • Overnight

    Overnight: Mostly clear, with a low around 72. Southwest wind around 5 mph.

    Low: 72 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny and hot, with a high near 91. Southwest wind 5 to 10 mph.

    High: 91 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 72. West wind around 5 mph becoming calm  in the evening.

    Low: 72 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 93. Heat index values as high as 96. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 73. North wind around 5 mph becoming calm  in the evening.

    Low: 73 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 74. South wind around 5 mph becoming calm  after midnight.

    Low: 74 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 2pm.  Partly sunny and hot, with a high near 93. Chance of precipitation is 60%.

    High: 93 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 2am, then a slight chance of showers.  Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    T-storms
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 72. Southwest wind around 5 mph.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 91. Southwest wind 5 to 10 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. West wind around 5 mph becoming calm in the evening.
Monday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93. Heat index values as high as 96. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. North wind around 5 mph becoming calm in the evening.
Tuesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 74. South wind around 5 mph becoming calm after midnight.
Wednesday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny and hot, with a high near 93. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely before 2am, then a slight chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Thursday
A slight chance of showers, then showers and thunderstorms likely after 8am. Partly sunny and hot, with a high near 91. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely. Partly 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%.
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville, McGhee Tyson Airport TN
 35.83°N 83.98°W (Elev. 961 ft)
1:05 am EDT Jul 13, 2025
1am EDT Jul 13, 2025-6pm EDT Jul 19, 2025
 
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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