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

Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

36°F

2°C

Humidity 31%
Wind Speed NW 8 mph
Barometer 30.22 in (1024.0 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 17 Mar 7:53 pm EDT
Extended Forecast for

Knoxville, McGhee Tyson Airport TN

  • Tonight

    Tonight: Increasing clouds, with a low around 27. Northwest wind around 5 mph becoming calm in the evening.

    Low: 27 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. Light south wind becoming southwest 5 to 10 mph in the afternoon.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 35. South wind around 5 mph.

    Low: 35 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 64. Southwest wind 5 to 10 mph.

    High: 64 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 45. Southwest wind around 5 mph.

    Low: 45 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 72. Calm wind becoming west around 5 mph in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50. Southwest wind around 5 mph.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 27. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 51. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 35. South wind around 5 mph.
Thursday
Partly sunny, with a high near 64. Southwest wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 45. Southwest wind around 5 mph.
Friday
Mostly sunny, with a high near 72. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 50. Southwest wind around 5 mph.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 80.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 51.
Monday
A 10 percent chance of showers and thunderstorms. Mostly sunny, with a high near 68.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville, McGhee Tyson Airport TN
 35.83°N 83.98°W (Elev. 961 ft)
Last Update:
7:07 pm EDT Mar 17, 2026
Forecast Valid:
8pm EDT Mar 17, 2026-6pm EDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation