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 87%
Wind Speed Calm
Barometer 30.00 in (1014.9 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 19 Aug 4:53 am EDT
Extended Forecast for

Signal Mountain TN

  • Today

    Today: Sunny and hot, with a high near 90. Calm wind.

    High: 90 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly between 2pm and 5pm.  Mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly after 8pm.  Partly cloudy, with a low around 70. Northwest wind around 5 mph.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 11am.  Mostly sunny, with a high near 86. Calm wind becoming west around 5 mph.  Chance of precipitation is 50%.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of thunderstorms before 8pm.  Partly cloudy, with a low around 67. Calm wind.  Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 87. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Sunny and hot, with a high near 90. Calm wind.
Tonight
Partly cloudy, with a low around 71. Calm wind.
Thursday
A 40 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly after 8pm. Partly cloudy, with a low around 70. Northwest wind around 5 mph.
Friday
A chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 86. Calm wind becoming west around 5 mph. Chance of precipitation is 50%.
Friday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 87. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 65.
Monday
A 20 percent chance of showers. Sunny, with a high near 86.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 66.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Signal Mountain TN
 35.15°N 85.35°W (Elev. 1709 ft)
2:26 am EDT Aug 19, 2026
5am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
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Additional Resources

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