Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Chattanooga, Lovell Field (KCHA)

Lat: 35.03°NLon: 85.2°WElev: 679ft.

Partly Cloudy

96°F

36°C

Humidity 40%
Wind Speed N 9 mph
Barometer 29.94 in (1012.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 4 Sep 5:53 pm EDT
Extended Forecast for

Signal Mountain TN

Heat Advisory September 4, 06:12pm until September 5, 08:00pm
Heat Advisory September 4, 06:12pm until September 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
...
  •  
    Heat Advisory September 4, 06:12pm until September 5, 08:00pm
    Heat Advisory September 4, 06:12pm until September 4, 08:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 74 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 5pm.  Sunny and hot, with a high near 93. Heat index values as high as 102. Calm wind becoming northeast around 5 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 73. North wind around 5 mph becoming calm.

    Low: 73 °F

    Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 91. Heat index values as high as 98. Calm wind becoming north around 5 mph in the afternoon.

    High: 91 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 70. Northeast wind around 5 mph.

    Low: 70 °F

    Mostly Clear

  • Labor Day

    Labor Day: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 86. Northeast wind around 5 mph becoming southeast in the afternoon.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am.  Mostly clear, with a low around 69. Southeast wind around 5 mph.  Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers after 2pm.  Sunny, with a high near 87.

    High: 87 °F

    Sunny then
    Slight Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 74. Calm wind.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny and hot, with a high near 93. Heat index values as high as 102. Calm wind becoming northeast around 5 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. North wind around 5 mph becoming calm.
Sunday
Sunny and hot, with a high near 91. Heat index values as high as 98. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 70. Northeast wind around 5 mph.
Labor Day
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Northeast wind around 5 mph becoming southeast in the afternoon.
Monday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly clear, with a low around 69. Southeast wind around 5 mph. Chance of precipitation is 30%.
Tuesday
A 20 percent chance of showers after 2pm. Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
A 20 percent chance of showers before 2pm. Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Sunny and hot, with a high near 90.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 69.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Signal Mountain TN
 35.12°N 85.35°W (Elev. 1683 ft)
2:26 pm EDT Sep 4, 2026
6pm EDT Sep 4, 2026-6pm EDT Sep 11, 2026
 
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Additional Resources

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