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.

Fair

80°F

27°C

Humidity 82%
Wind Speed Calm
Barometer 29.95 in (1013.0 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 5 Sep 2:53 am EDT
Extended Forecast for

Signal Mountain TN

Heat Advisory September 5, 03:04am until September 5, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 5, 03:04am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Overnight

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 93. Heat index values as high as 101. Calm wind.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly between 7pm and 8pm.  Mostly clear, with a low around 73. Northwest wind around 5 mph becoming calm.

    Low: 73 °F

    Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms between 2pm and 3pm.  Sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind becoming north around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 70. Northeast wind 5 to 10 mph.

    Low: 70 °F

    Mostly Clear

  • Labor Day

    Labor Day: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 85. Northeast wind around 5 mph becoming southeast in the afternoon.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. Southeast wind around 5 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 74. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93. Heat index values as high as 101. Calm wind.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly between 7pm and 8pm. Mostly clear, with a low around 73. Northwest wind around 5 mph becoming calm.
Sunday
A slight chance of showers and thunderstorms between 2pm and 3pm. Sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 70. Northeast wind 5 to 10 mph.
Labor Day
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Northeast wind around 5 mph becoming southeast in the afternoon.
Monday Night
Mostly clear, with a low around 69. Southeast wind around 5 mph.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 88.
Thursday Night
A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Friday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Signal Mountain TN
 35.13°N 85.38°W (Elev. 1699 ft)
2:26 am EDT Sep 5, 2026
3am EDT Sep 5, 2026-6pm EDT Sep 11, 2026
 
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Additional Resources

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