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

Severe Weather Possible from the Central Plains to the Northeast; Building Heat in the West; Fire Weather Concerns for the Southwest

Severe thunderstorms will be possible from the central Plains to the Mid-Atlantic and Northeast on Monday. Hazardous heat will linger across the southern U.S. and build across the West through mid-week. Hot and dry conditions will fuel fire weather concerns for Interior Alaska and the Four Corners region through Monday. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

80°F

27°C

Humidity 58%
Wind Speed SW 8 mph
Barometer 29.93 in (1012.2 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 21 Jun 9:53 pm EDT
Extended Forecast for

4 Miles SSE Maryville TN

  • Tonight

    Tonight: Partly cloudy, with a low around 71. South wind around 5 mph.

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: Showers and thunderstorms, mainly after 4pm. High near 85. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 85 °F

    Chance
    Showers then
    T-storms

  • Monday Night

    Monday Night: Showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and midnight, then a chance of showers after midnight. Low around 68. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 68 °F

    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A 10 percent chance of showers before 8am. Partly sunny, with a high near 82. Northwest wind around 5 mph becoming north in the morning.

    High: 82 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63. North wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming north around 5 mph.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 87.

    High: 87 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 71. South wind around 5 mph.
Monday
Showers and thunderstorms, mainly after 4pm. High near 85. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and midnight, then a chance of showers after midnight. Low around 68. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
A 10 percent chance of showers before 8am. Partly sunny, with a high near 82. Northwest wind around 5 mph becoming north in the morning.
Tuesday Night
Partly cloudy, with a low around 63. North wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 86. Calm wind becoming north around 5 mph.
Wednesday Night
Mostly clear, with a low around 67. Calm wind.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 87.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 40%.
Friday
A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 87. Chance of precipitation is 50%.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Maryville TN
 35.71°N 83.94°W (Elev. 988 ft)
Last Update:
7:06 pm EDT Jun 21, 2026
Forecast Valid:
10pm EDT Jun 21, 2026-6pm EDT Jun 28, 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