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

Areas of Excessive Rainfall, Severe Thunderstorms, and Extreme Heat

Heavy to excessive rainfall is expected through tonight across portions of the central Plains. Areas of intense rainfall amounts could support increasing flooding concerns. Scattered severe thunderstorms are possible across parts of the central/southern Plains today and tonight, with large hail and damaging winds the main threats. Areas of extreme heat will impact parts of the West this week. Read More >

Current conditions at

Oak Ridge (KOQT)

Lat: 36.02°NLon: 84.23°WElev: 915ft.

A Few Clouds

82°F

28°C

Humidity 60%
Wind Speed Calm
Barometer 30.13 in (1018.8 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 10 Aug 8:53 pm EDT
Extended Forecast for

Harriman TN

  • Tonight

    Tonight: Partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 87. Calm wind.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South wind around 5 mph becoming calm.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Calm wind. Chance of precipitation is 70%.

    High: 83 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 70.

    Low: 70 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 69. Calm wind.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 87. Calm wind.
Monday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Calm wind.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. Calm wind.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South wind around 5 mph becoming calm.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Calm wind. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 86.
Thursday Night
Mostly cloudy, with a low around 70.
Friday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harriman TN
 35.95°N 84.55°W (Elev. 1345 ft)
Last Update:
7:08 pm EDT Aug 10, 2025
Forecast Valid:
9pm EDT Aug 10, 2025-6pm EDT Aug 17, 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