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

Heavy Rainfall for Portions of the West and Southern Plains; Dangerous Heat for the Northwest

A front will bring chances for showers and thunderstorms over the Central Rockies and Southern Plains. Heavy rains are also possible in southern Arizona. A dangerous heat wave continues across the Pacific Northwest. Hot, dry conditions and lightning may cause new fire starts across the Cascades. Conversely, a cold front will bring unseasonably cool temperatures to much of the lower 48. Read More >

Current conditions at

Chattanooga, Lovell Field (KCHA)

Lat: 35.03°NLon: 85.2°WElev: 679ft.

Partly Cloudy

65°F

18°C

Humidity 73%
Wind Speed NW 7 mph
Barometer 30.03 in (1016.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 25 Aug 5:53 am EDT
Extended Forecast for

Signal Mountain TN

  • Today

    Today: Increasing clouds, with a high near 77. North wind around 5 mph.

    High: 77 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 59. North wind around 5 mph.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74. North wind around 5 mph.

    High: 74 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 54. North wind around 5 mph.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75. Northeast wind around 5 mph.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. North wind around 5 mph.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 75. Calm wind.

    High: 75 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after 8pm. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers. Mostly sunny, with a high near 77.

    High: 77 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Increasing clouds, with a high near 77. North wind around 5 mph.
Tonight
Partly cloudy, with a low around 59. North wind around 5 mph.
Tuesday
Mostly sunny, with a high near 74. North wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 54. North wind around 5 mph.
Wednesday
Sunny, with a high near 75. Northeast wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 56. North wind around 5 mph.
Thursday
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 75. Calm wind.
Thursday Night
A 30 percent chance of showers, mainly after 8pm. Mostly cloudy, with a low around 56.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 59.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 77.
Saturday Night
A 10 percent chance of showers. Partly cloudy, with a low around 61.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Signal Mountain TN
 35.13°N 85.38°W (Elev. 1699 ft)
Last Update:
1:31 am EDT Aug 25, 2025
Forecast Valid:
6am EDT Aug 25, 2025-6pm EDT Aug 31, 2025
 
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