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

Rapid Warm-Up Forecast Across Much of the Lower 48 Today and Tuesday

Most of the U.S. starts the week calm and unseasonably warm. The Heartland will be warmest, with highs 25–30° above average. Only the Gulf Coast stays chilly. Rain today is limited to western Washington while lake effect snow continues east of Lake Ontario. Cooler air returns after Tuesday, bringing a wintry mix to the Midwest and Northeast by Wednesday. Read More >

Current conditions at

Athens McMinn County Airport (KMMI)

Lat: 35.4°NLon: 84.56°WElev: 874ft.

Fair

43°F

6°C

Humidity 42%
Wind Speed Calm
Barometer 30.33 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 12 Jan 5:55 pm EST
Extended Forecast for

Watts Bar Dam TN

  • Tonight

    Tonight: Mostly clear, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 55. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 55 °F

    Sunny

  • Tuesday Night

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

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 50. Southwest wind around 5 mph. Chance of precipitation is 70%.

    High: 50 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of rain showers before 11pm, then a chance of snow showers between 11pm and 1am. Mostly cloudy, with a low around 22. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 22 °F

    Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Thursday

    Thursday: Partly sunny, with a high near 33. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 33 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 16. Calm wind.

    Low: 16 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 25. Calm wind.
Tuesday
Sunny, with a high near 55. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 35. South wind around 5 mph.
Wednesday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 50. Southwest wind around 5 mph. Chance of precipitation is 70%.
Wednesday Night
A chance of rain showers before 11pm, then a chance of snow showers between 11pm and 1am. Mostly cloudy, with a low around 22. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 33. Northwest wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 16. Calm wind.
Friday
Mostly sunny, with a high near 44.
Friday Night
Mostly cloudy, with a low around 26.
Saturday
Partly sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 18.
Sunday
Mostly sunny, with a high near 36.
Sunday Night
Mostly clear, with a low around 13.
M.L.King Day
Sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Watts Bar Dam TN
 35.63°N 84.78°W (Elev. 741 ft)
Last Update:
12:31 pm EST Jan 12, 2026
Forecast Valid:
6pm EST Jan 12, 2026-6pm EST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation