Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Chattanooga, Lovell Field (KCHA)

Lat: 35.03°NLon: 85.2°WElev: 679ft.

Fair

71°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 29.99 in (1014.6 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 19 Aug 3:53 am EDT
Extended Forecast for

Harrison TN

  • Today

    Today: Sunny and hot, with a high near 95. Heat index values as high as 99. Calm wind.

    High: 95 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 3pm.  Mostly sunny and hot, with a high near 93. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon.  Chance of precipitation is 40%.

    High: 93 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly after 8pm.  Increasing clouds, with a low around 74. West wind around 5 mph becoming calm  in the evening.

    Low: 74 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm.  Mostly sunny and hot, with a high near 91. Calm wind becoming southwest around 5 mph.  Chance of precipitation is 60%.

    High: 91 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 8pm.  Partly cloudy, with a low around 72. Calm wind.  Chance of precipitation is 60%.

    Low: 72 °F

    Showers
    Likely then
    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 92. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 92 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 92.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 95. Heat index values as high as 99. Calm wind.
Tonight
Partly cloudy, with a low around 74. Calm wind.
Thursday
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 93. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 40%.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly after 8pm. Increasing clouds, with a low around 74. West wind around 5 mph becoming calm in the evening.
Friday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny and hot, with a high near 91. Calm wind becoming southwest around 5 mph. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 60%.
Saturday
Sunny and hot, with a high near 92. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 70.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 92.
Sunday Night
Partly cloudy, with a low around 69.
Monday
A 20 percent chance of showers. Sunny and hot, with a high near 91.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 70.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Harrison TN
 35.13°N 85.13°W (Elev. 682 ft)
2:26 am EDT Aug 19, 2026
4am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database