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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

49°F

9°C

Humidity 59%
Wind Speed Calm
Barometer 30.00 in (1016.1 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 7 Dec 2:53 pm EST
Extended Forecast for

5 Miles NNE Tallassee TN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 52. Calm wind.

    High: 52 °F

    Mostly Sunny

  • Tonight

    Tonight: A 40 percent chance of showers after 2am. Increasing clouds, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers, mainly before 2pm. Cloudy, with a high near 43. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 43 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 29. North wind around 5 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 54. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 54 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 52. Calm wind.
Tonight
A 40 percent chance of showers after 2am. Increasing clouds, with a low around 39. Calm wind.
Monday
A 40 percent chance of showers, mainly before 2pm. Cloudy, with a high near 43. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 29. North wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 49. Light south wind becoming southwest 5 to 10 mph in the morning.
Tuesday Night
Mostly clear, with a low around 38. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 54. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Wednesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 36.
Thursday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 48.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 34.
Friday
A 20 percent chance of showers. Partly sunny, with a high near 44.
Friday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 21. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Tallassee TN
 35.62°N 83.92°W (Elev. 1270 ft)
Last Update:
1:46 pm EST Dec 7, 2025
Forecast Valid:
3pm EST Dec 7, 2025-6pm EST Dec 13, 2025
 
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