Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Hazardous Weather Conditions

Current conditions at

Oak Ridge (KOQT)

Lat: 36.02°NLon: 84.23°WElev: 915ft.

Mostly Cloudy

31°F

-1°C

Humidity 59%
Wind Speed Vrbl 5 mph
Barometer 30.16 in (1022.9 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 17 Mar 8:53 am EDT
Extended Forecast for

Harriman TN

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 40. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 40 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Increasing clouds, with a low around 25. Northwest wind around 5 mph becoming calm.

    Low: 25 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A slight chance of snow showers before 11am, then a slight chance of rain and snow showers between 11am and 2pm, then a slight chance of rain showers after 2pm.  Mostly cloudy, with a high near 49. Calm wind becoming south around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 49 °F

    Slight Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. South wind around 5 mph becoming calm.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63. Calm wind becoming south around 5 mph in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 72. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 40. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Increasing clouds, with a low around 25. Northwest wind around 5 mph becoming calm.
Wednesday
A slight chance of snow showers before 11am, then a slight chance of rain and snow showers between 11am and 2pm, then a slight chance of rain showers after 2pm. Mostly cloudy, with a high near 49. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 32. South wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 63. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 41. Calm wind.
Friday
Mostly sunny, with a high near 72. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Partly sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Harriman TN
 35.91°N 84.58°W (Elev. 804 ft)
7:51 am EDT Mar 17, 2026
9am EDT Mar 17, 2026-6pm EDT Mar 23, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database