Areas of Excessive Rainfall and Extreme Heat; Monitoring Tropical Storm Erin

Heavy to excessive rainfall over the southern Appalachians may bring areas of flooding Tuesday. Hot to extremely hot temperatures are in place through Tuesday across much of the western U.S. and northern New England. Tropical Storm Erin is forecast to become a Major Hurricane by this weekend as it moves across the central Atlantic Ocean. Monitor future forecasts for any East Coast impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Chattanooga, Lovell Field (KCHA)

Lat: 35.03°NLon: 85.2°WElev: 679ft.

Mostly Cloudy

77°F

25°C

Humidity 82%
Wind Speed S 3 mph
Barometer 30.08 in (1017.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 12 Aug 1:53 am EDT
Extended Forecast for

Lookout Mountain TN

  • Overnight

    Overnight: A 10 percent chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 71. Southeast wind 5 to 10 mph.

    Low: 71 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms, mainly before 5pm.  Patchy fog between 8am and 11am. High near 79. Southeast wind around 5 mph.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 79 °F

    Chance
    T-storms and
    Patchy Fog
    then T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly after 11pm.  Mostly cloudy, with a low around 71. South wind around 5 mph becoming southwest after midnight.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 2pm.  Partly sunny, with a high near 83. Southwest wind around 5 mph.  Chance of precipitation is 70%.

    High: 83 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am, then a slight chance of showers and thunderstorms after 2am.  Mostly cloudy, with a low around 71. Southwest wind around 5 mph.  Chance of precipitation is 60%.

    Low: 71 °F

    T-storms
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm.  Partly sunny, with a high near 86. West wind around 5 mph becoming calm.  Chance of precipitation is 60%.

    High: 86 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm.  Partly cloudy, with a low around 71. West wind around 5 mph.  Chance of precipitation is 60%.

    Low: 71 °F

    Showers
    Likely then
    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Overnight
A 10 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 71. Southeast wind 5 to 10 mph.
Tuesday
Showers and thunderstorms, mainly before 5pm. Patchy fog between 8am and 11am. High near 79. Southeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
A 50 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 71. South wind around 5 mph becoming southwest after midnight. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 83. Southwest wind around 5 mph. Chance of precipitation is 70%.
Wednesday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 71. Southwest wind around 5 mph. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 86. West wind around 5 mph becoming calm. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 71. West wind around 5 mph. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 71.
Sunday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 88.
Sunday Night
A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 71.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Lookout Mountain TN
 34.99°N 85.36°W (Elev. 1834 ft)
1:38 am EDT Aug 12, 2025
2am EDT Aug 12, 2025-6pm EDT Aug 18, 2025
 
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Additional Resources

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