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

Heavy Rain in the Southern Appalachians; Heat Continues in the West; Monitoring Tropical Storm Erin

Heavy to excessive rain falling over the southern Appalachians may bring areas of flooding into Wednesday. Hot temperatures are in place through Wednesday across parts of the western U.S. and New England. Tropical Storm Erin is forecast to become a Hurricane by late this week as it moves westward across the central Atlantic Ocean. Monitor forecasts for any Puerto Rico or U.S. East Coast impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Jackson County Airport (K24A)

Lat: 35.32°NLon: 83.21°WElev: 2857ft.

Thunderstorm Light Rain in Vicinity

70°F

21°C

Humidity NA
Wind Speed Calm
Barometer 30.17 in
Dewpoint N/A
Visibility 4.00 mi
Last update 12 Aug 9:15 pm EDT
Extended Forecast for

9 Miles S Cosby TN

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm. Patchy fog. Otherwise, mostly cloudy, with a low around 59. South southwest wind 7 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday

    Wednesday: Showers and thunderstorms likely before 2pm, then showers and possibly a thunderstorm between 2pm and 4pm, then showers and thunderstorms likely after 4pm. Some of the storms could produce heavy rainfall. Patchy fog before 4pm, then patchy fog after 5pm. High near 65. West southwest wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    High: 65 °F

    Showers
    Likely and
    Patchy Fog
    then Heavy
    Rain and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms between 2am and 5am, then a chance of showers after 5am. Some of the storms could produce heavy rainfall. Patchy fog between midnight and 3am. Otherwise, mostly cloudy, with a low around 59. Southwest wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Heavy Rain
    and Patchy
    Fog

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 66. Northwest wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Chance
    T-storms then
    Showers

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 1am. Mostly cloudy, with a low around 59. Light and variable wind. Chance of precipitation is 60%.

    Low: 59 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 68.

    High: 68 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 59.

    Low: 59 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 59.

    Low: 59 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Showers likely and possibly a thunderstorm. Patchy fog. Otherwise, mostly cloudy, with a low around 59. South southwest wind 7 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and thunderstorms likely before 2pm, then showers and possibly a thunderstorm between 2pm and 4pm, then showers and thunderstorms likely after 4pm. Some of the storms could produce heavy rainfall. Patchy fog before 4pm, then patchy fog after 5pm. High near 65. West southwest wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Wednesday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms between 2am and 5am, then a chance of showers after 5am. Some of the storms could produce heavy rainfall. Patchy fog between midnight and 3am. Otherwise, mostly cloudy, with a low around 59. Southwest wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 66. Northwest wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 1am. Mostly cloudy, with a low around 59. Light and variable wind. Chance of precipitation is 60%.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 68.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 59.
Saturday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 68.
Saturday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 59.
Sunday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 69.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 69.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles S Cosby TN
 35.69°N 83.25°W (Elev. 5610 ft)
Last Update:
8:12 pm EDT Aug 12, 2025
Forecast Valid:
9pm EDT Aug 12, 2025-6pm EDT Aug 19, 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