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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

Chattanooga, Lovell Field (KCHA)

Lat: 35.03°NLon: 85.2°WElev: 679ft.

Mostly Cloudy

82°F

28°C

Humidity 49%
Wind Speed N 6 mph
Barometer 29.99 in (1014.9 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 20 Jun 3:53 pm EDT
Extended Forecast for

Signal Mountain TN

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 63. Calm wind.

    Low: 63 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: A 10 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 85 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 3am. Mostly clear, with a low around 70. South wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 70 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 82. Southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    High: 82 °F

    Showers
    Likely then
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 68. Southwest wind 5 to 10 mph becoming light west after midnight. Chance of precipitation is 80%.

    Low: 68 °F

    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 82. Northwest wind around 5 mph. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 65. Northwest wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 82.

    High: 82 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 63. Calm wind.
Sunday
A 10 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 3am. Mostly clear, with a low around 70. South wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 82. Southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Monday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 68. Southwest wind 5 to 10 mph becoming light west after midnight. Chance of precipitation is 80%.
Tuesday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 82. Northwest wind around 5 mph. Chance of precipitation is 40%.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 65. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 82.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 65.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Signal Mountain TN
 35.12°N 85.35°W (Elev. 1683 ft)
Last Update:
2:26 pm EDT Jun 20, 2026
Forecast Valid:
4pm EDT Jun 20, 2026-6pm EDT Jun 27, 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