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

Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

60°F

16°C

Humidity 84%
Wind Speed Calm
Barometer 30.01 in (1015.5 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 28 Dec 6:53 am EST
Extended Forecast for

Alcoa TN

  • Today

    Today: Partly sunny, with a high near 73. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 73 °F

    Partly Sunny

  • Tonight

    Tonight: Showers, mainly after 1am. Low around 37. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Slight Chance
    Showers then
    Showers and
    Breezy

  • Monday

    Monday: A 30 percent chance of showers, mainly before 11am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 37 by 5pm. West wind around 15 mph, with gusts as high as 25 mph.

    High: 47 °F⇓

    Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 23. West wind 5 to 10 mph.

    Low: 23 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 37. Northwest wind around 5 mph.

    High: 37 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23. West wind around 5 mph becoming calm.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 45. Southwest wind 5 to 10 mph.

    High: 45 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Sunny, with a high near 49.

    High: 49 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 73. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Showers, mainly after 1am. Low around 37. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
A 30 percent chance of showers, mainly before 11am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 37 by 5pm. West wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 23. West wind 5 to 10 mph.
Tuesday
Sunny, with a high near 37. Northwest wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 23. West wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 45. Southwest wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 28.
New Year's Day
Sunny, with a high near 49.
Thursday Night
Partly cloudy, with a low around 29.
Friday
Partly sunny, with a high near 51.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.
Saturday
A chance of rain and snow. Partly sunny, with a high near 54. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alcoa TN
 35.8°N 83.96°W (Elev. 856 ft)
Last Update:
6:06 am EST Dec 28, 2025
Forecast Valid:
7am EST Dec 28, 2025-6pm EST Jan 3, 2026
 
Forecast Discussion
 
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Additional Resources

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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