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

Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Current conditions at

Oak Ridge (KOQT)

Lat: 36.02°NLon: 84.23°WElev: 915ft.

Fair

58°F

14°C

Humidity 35%
Wind Speed Calm
Barometer 30.24 in (1024.7 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 19 Mar 12:53 pm EDT
Extended Forecast for

Harriman TN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 65. Calm wind.

    High: 65 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 73. Light south wind becoming southwest 5 to 10 mph in the afternoon.

    High: 73 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51. Southwest wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 79. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 10 percent chance of showers before 8pm. Mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 2am. Partly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: A 10 percent chance of showers before 8am. Mostly sunny, with a high near 67.

    High: 67 °F

    Slight Chance
    Showers then
    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 65. Calm wind.
Tonight
Mostly clear, with a low around 40. Calm wind.
Friday
Mostly sunny, with a high near 73. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 51. Southwest wind around 5 mph becoming calm in the evening.
Saturday
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 79. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
A 10 percent chance of showers before 8pm. Mostly clear, with a low around 51. Calm wind.
Sunday
Sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 54.
Monday
A 10 percent chance of showers before 8am. Mostly sunny, with a high near 67.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 69.
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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:
1:06 pm EDT Mar 19, 2026
Forecast Valid:
1pm EDT Mar 19, 2026-6pm EDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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