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

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Light Rain

73°F

23°C

Humidity 81%
Wind Speed Calm
Barometer 30.07 in (1017.1 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 21 May 2:53 pm EDT
Extended Forecast for

Maryville TN

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. High near 75. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 65. Northeast wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers and thunderstorms likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then showers and thunderstorms likely after 2pm. Mostly cloudy, with a high near 79. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 79 °F

    Showers
    Likely then
    T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 2am, then showers after 2am. Low around 65. South wind around 5 mph. Chance of precipitation is 90%.

    Low: 65 °F

    T-storms then
    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 11am. High near 80. South wind 5 to 10 mph. Chance of precipitation is 100%.

    High: 80 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after 11am. High near 83. Calm wind becoming southwest around 5 mph. Chance of precipitation is 90%.

    High: 83 °F

    Showers
    Likely then
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 65. Chance of precipitation is 80%.

    Low: 65 °F

    Showers

  • Memorial Day

    Memorial Day: Showers, with thunderstorms also possible after 8am. High near 81. Chance of precipitation is 90%.

    High: 81 °F

    Showers

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 75. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 65. Northeast wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then showers and thunderstorms likely after 2pm. Mostly cloudy, with a high near 79. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 2am, then showers after 2am. Low around 65. South wind around 5 mph. Chance of precipitation is 90%.
Saturday
Showers, with thunderstorms also possible after 11am. High near 80. South wind 5 to 10 mph. Chance of precipitation is 100%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Sunday
Showers likely, then showers and possibly a thunderstorm after 11am. High near 83. Calm wind becoming southwest around 5 mph. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 65. Chance of precipitation is 80%.
Memorial Day
Showers, with thunderstorms also possible after 8am. High near 81. Chance of precipitation is 90%.
Monday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 66. Chance of precipitation is 80%.
Tuesday
Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 83. Chance of precipitation is 80%.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville TN
 35.74°N 83.96°W (Elev. 1010 ft)
Last Update:
2:26 pm EDT May 21, 2026
Forecast Valid:
3pm EDT May 21, 2026-6pm EDT May 27, 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