Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

32°F

0°C

Humidity 82%
Wind Speed Calm
Barometer 30.19 in (1022.6 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 9 Dec 1:53 am EST
Extended Forecast for

2 Miles WSW Alcoa TN

  • Overnight

    Overnight: Cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 47. Light south wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 47 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 53. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 30 mph.

    High: 53 °F

    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30. West wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 30 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 44. West wind 5 to 10 mph.

    High: 44 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 31. Southwest wind around 5 mph.

    Low: 31 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am.  Partly cloudy, with a low around 35.

    Low: 35 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Cloudy, with a low around 26. Calm wind.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 47. Light south wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 36. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 53. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly cloudy, with a low around 30. West wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday
Partly sunny, with a high near 44. West wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 31. Southwest wind around 5 mph.
Friday
Mostly sunny, with a high near 52.
Friday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 35.
Saturday
Mostly sunny, with a high near 53.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 34.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 42.
Sunday Night
Mostly clear, with a low around 22.
Monday
Mostly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alcoa TN
 35.78°N 84.01°W (Elev. 958 ft)
12:31 am EST Dec 9, 2025
2am EST Dec 9, 2025-6pm EST Dec 15, 2025
 
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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