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

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

83°F

28°C

Humidity 72%
Wind Speed Vrbl 6 mph
Barometer 30.08 in (1017.2 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 27 Jun 1:53 pm EDT
Extended Forecast for

2 Miles ESE Maryville TN

Flood Watch June 27, 08:00pm until June 28, 11:00am
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm before 4pm, then showers and thunderstorms likely after 4pm. High near 86. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 71. Southwest wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    T-storms
    Likely then
    Showers

  • Sunday

    Sunday: Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then showers and thunderstorms likely after 2pm. High near 86. Heat index values as high as 96. Southwest wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 86 °F

    Showers then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Partly cloudy, with a low around 72. West wind around 5 mph becoming calm. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers, with thunderstorms also possible after 11am. Mostly sunny and hot, with a high near 91. Calm wind. Chance of precipitation is 20%.

    High: 91 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 93. Calm wind becoming north around 5 mph.

    High: 93 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 92.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm before 4pm, then showers and thunderstorms likely after 4pm. High near 86. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 71. Southwest wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then showers and thunderstorms likely after 2pm. High near 86. Heat index values as high as 96. Southwest wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Partly cloudy, with a low around 72. West wind around 5 mph becoming calm. Chance of precipitation is 40%.
Monday
A slight chance of showers, with thunderstorms also possible after 11am. Mostly sunny and hot, with a high near 91. Calm wind. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 74. Calm wind.
Tuesday
Sunny and hot, with a high near 93. Calm wind becoming north around 5 mph.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 92.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 74.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 94.
Thursday Night
A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 74.
Friday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Maryville TN
 35.73°N 83.94°W (Elev. 1033 ft)
Last Update:
2:26 pm EDT Jun 27, 2026
Forecast Valid:
2pm EDT Jun 27, 2026-6pm EDT Jul 3, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation