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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

Powells Crossroads TN

  • Overnight

    Overnight: A 10 percent chance of showers after 5am. Mostly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Showers and thunderstorms, mainly before 4pm. Patchy fog before 10am. High near 83. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    T-storms and
    Patchy Fog
    then T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 86. Heat index values as high as 95. Calm wind becoming southwest around 5 mph. Chance of precipitation is 80%.

    High: 86 °F

    Chance
    T-storms then
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 88. Calm wind. Chance of precipitation is 60%.

    High: 88 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 7pm. Partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 90.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

Detailed Forecast

Overnight
A 10 percent chance of showers after 5am. Mostly cloudy, with a low around 71. Calm wind.
Tuesday
Showers and thunderstorms, mainly before 4pm. Patchy fog before 10am. High near 83. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 71. Calm wind.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 86. Heat index values as high as 95. Calm wind becoming southwest around 5 mph. Chance of precipitation is 80%.
Wednesday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.
Thursday
Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 88. Calm wind. Chance of precipitation is 60%.
Thursday Night
A chance of thunderstorms before 7pm. Partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 90.
Friday Night
Mostly clear, with a low around 70.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 92.
Saturday Night
Mostly clear, with a low around 71.
Sunday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 91.
Sunday Night
Mostly clear, with a low around 71.
Monday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Powells Crossroads TN
 35.18°N 85.48°W (Elev. 794 ft)
Last Update:
12:38 am CDT Aug 12, 2025
Forecast Valid:
1am CDT Aug 12, 2025-6pm CDT Aug 18, 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