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

Dangerous Heat to Continue through the Holiday Weekend; Severe Storms on Friday from the Plains to the Mid-Atlantic

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing across the eastern U.S. through the Independence Day holiday weekend. Peak heat indices of up to 115 degrees are possible. Isolated to scattered severe thunderstorms are possible from the northern/central Plains into the Midwest, Ohio Valley, and Mid-Atlantic Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Chattanooga, Lovell Field (KCHA)

Lat: 35.03°NLon: 85.2°WElev: 679ft.

Mostly Cloudy

88°F

31°C

Humidity 57%
Wind Speed E 5 mph
Barometer 30.09 in (1017.9 mb)
Dewpoint 71°F (22°C)
Visibility 9.00 mi
Heat Index94°F (34°C)
Last update 2 Jul 11:53 pm EDT
Extended Forecast for

Signal Mountain TN

Heat Advisory July 3, 12:49am until July 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 3, 12:49am until July 4, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Overnight

    Low: 73 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny and hot, with a high near 94. Heat index values as high as 99. Calm wind.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 72. North wind around 5 mph becoming calm.

    Low: 72 °F

    Chance
    T-storms then
    Mostly Clear

  • Independence Day

    Independence Day: Sunny and hot, with a high near 92. Calm wind.

    High: 92 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72. Southwest wind around 5 mph becoming calm.

    Low: 72 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny and hot, with a high near 91. Calm wind. Chance of precipitation is 50%.

    High: 91 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm.

    Low: 71 °F

    Chance
    T-storms

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 73. North wind around 5 mph becoming calm.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny and hot, with a high near 94. Heat index values as high as 99. Calm wind.
Friday Night
A 30 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 72. North wind around 5 mph becoming calm.
Independence Day
Sunny and hot, with a high near 92. Calm wind.
Saturday Night
Mostly clear, with a low around 72. Southwest wind around 5 mph becoming calm.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny and hot, with a high near 91. Calm wind. Chance of precipitation is 50%.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm.
Monday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89.
Monday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 70.
Tuesday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 70. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 70. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Signal Mountain TN
 35.14°N 85.32°W (Elev. 1916 ft)
Last Update:
7:07 pm EDT Jul 2, 2026
Forecast Valid:
12am EDT Jul 3, 2026-6pm EDT Jul 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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