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

Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

28°F

-2°C

Humidity 58%
Wind Speed W 6 mph
Barometer 30.22 in (1023.8 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 29 Dec 10:53 pm EST
Extended Forecast for

Louisville TN

  • Tonight

    Tonight: Mostly cloudy, with a low around 22. Northwest wind around 5 mph.

    Low: 22 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 37. Northwest wind around 5 mph.

    High: 37 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23. Southwest wind around 5 mph.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 46. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 46 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28. Southwest wind around 5 mph.

    Low: 28 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Sunny, with a high near 49. West wind around 5 mph.

    High: 49 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely. Cloudy, with a low around 44. Chance of precipitation is 70%.

    Low: 44 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 22. Northwest wind around 5 mph.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 37. Northwest wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 23. Southwest wind around 5 mph.
Wednesday
Sunny, with a high near 46. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 28. Southwest wind around 5 mph.
New Year's Day
Sunny, with a high near 49. West wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 32. Calm wind.
Friday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 55.
Friday Night
Showers likely. Cloudy, with a low around 44. Chance of precipitation is 70%.
Saturday
A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 54.
Saturday Night
Mostly cloudy, with a low around 36.
Sunday
Partly sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 38.
Monday
Partly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Louisville TN
 35.83°N 84.04°W (Elev. 863 ft)
Last Update:
6:06 pm EST Dec 29, 2025
Forecast Valid:
11pm EST Dec 29, 2025-6pm EST Jan 5, 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