Heat Wave Continues; Areas of Severe Thunderstorms and Heavy Rain

Prolonged and intense heat wave continues into Friday with relief expected by this weekend. Extreme Heat Warnings and Heat Advisories remain in effect for portions of the Ohio Valley and the Southeast. Unsettled weather could produce severe weather and excessive rainfall for parts of the Central and Eastern U.S. Read More >

Hazardous Weather Conditions

Current conditions at

Oak Ridge (KOQT)

Lat: 36.02°NLon: 84.23°WElev: 915ft.

Fair

70°F

21°C

Humidity 93%
Wind Speed Calm
Barometer 30.12 in (1018.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 27 Jun 5:53 am EDT
Extended Forecast for

Heiskell TN

  • Today

    Today: A 50 percent chance of showers and thunderstorms after 2pm.  Patchy fog before 8am.  Otherwise, mostly sunny and hot, with a high near 91. Heat index values as high as 99. Calm wind.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Patchy Fog
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a slight chance of showers after 5am.  Patchy fog between 1am and 5am.  Otherwise, mostly cloudy, with a low around 69. Calm wind.  Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Slight Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm.  Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 89. Heat index values as high as 97. Calm wind.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    Showers and
    Patchy Fog
    then T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am.  Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 70. Calm wind.  Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely then
    Slight Chance
    T-storms and
    Patchy Fog

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 90. Calm wind.

    High: 90 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 2am.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers and
    Patchy Fog

  • Monday

    Monday: A chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm.  Patchy fog before 8am. High near 88. Calm wind becoming southwest around 5 mph in the afternoon.  Chance of precipitation is 80%.

    High: 88 °F

    Chance
    Showers and
    Patchy Fog
    then T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am.  Low around 71. Chance of precipitation is 80%.

    Low: 71 °F

    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am.  High near 85. Chance of precipitation is 90%.

    High: 85 °F

    Showers
    Likely then
    T-storms

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms after 2pm. Patchy fog before 8am. Otherwise, mostly sunny and hot, with a high near 91. Heat index values as high as 99. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before midnight, then a slight chance of showers after 5am. Patchy fog between 1am and 5am. Otherwise, mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.
Saturday
Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 89. Heat index values as high as 97. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%.
Sunday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Calm wind.
Sunday Night
A 30 percent chance of showers and thunderstorms before 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 71. Calm wind.
Monday
A chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. Patchy fog before 8am. High near 88. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%.
Monday Night
Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 71. Chance of precipitation is 80%.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 85. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Low around 69. Chance of precipitation is 80%.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
Heiskell TN
 36.12°N 84.04°W (Elev. 981 ft)
1:30 am EDT Jun 27, 2025
6am EDT Jun 27, 2025-6pm EDT Jul 3, 2025
 
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