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

Showers and Thunderstorms in the Southwest and Ohio Valley; Mountain Snow in the Northeast

Showers and thunderstorms, along with high-elevation snow, will begin to develop over parts of the Southwest late tonight and is expected to continue through Wednesday morning. Mountain snow over parts the Northeast will continue through Tuesday. A few strong to severe storms and heavy rainfall are possible across portions of the Lower Ohio Valley Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Oak Ridge (KOQT)

Lat: 36.02°NLon: 84.23°WElev: 915ft.

Fair

43°F

6°C

Humidity 56%
Wind Speed Calm
Barometer 30.12 in (1020.8 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 17 Nov 8:53 pm EST
Extended Forecast for

Harriman TN

  • Tonight

    Tonight: Partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 67. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 67 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then showers likely after 1am. Mostly cloudy, with a low around 54. Southwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 73. Calm wind becoming southwest around 5 mph.

    High: 73 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 74. Calm wind.

    High: 74 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Cloudy, with a low around 58. Calm wind becoming south around 5 mph. Chance of precipitation is 40%.

    Low: 58 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 1pm. Cloudy, with a high near 70. Chance of precipitation is 60%.

    High: 70 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 40. Calm wind.
Tuesday
Partly sunny, with a high near 67. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
A chance of showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then showers likely after 1am. Mostly cloudy, with a low around 54. Southwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 73. Calm wind becoming southwest around 5 mph.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 54. Calm wind.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 74. Calm wind.
Thursday Night
A chance of showers and thunderstorms. Cloudy, with a low around 58. Calm wind becoming south around 5 mph. Chance of precipitation is 40%.
Friday
Showers likely, mainly after 1pm. Cloudy, with a high near 70. Chance of precipitation is 60%.
Friday Night
Showers likely, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 67. Chance of precipitation is 50%.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 49.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 64.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 46.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harriman TN
 35.93°N 84.56°W (Elev. 761 ft)
Last Update:
6:06 pm EST Nov 17, 2025
Forecast Valid:
9pm EST Nov 17, 2025-6pm EST Nov 24, 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