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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Watauga County Hospital Heliport (KTNB)

Lat: 36.2°NLon: 81.65°WElev: 3146ft.

Fog/Mist

63°F

17°C

Humidity 100%
Wind Speed NA
Barometer 30.24 in
Dewpoint 63°F (17°C)
Visibility 1.00 mi
Last update 19 Sep 12:55 am EDT
Extended Forecast for

Grandfather Mountain NC

  • Overnight

    Overnight: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 61. North wind 3 to 5 mph.

    Low: 61 °F

    Patchy Fog

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 2pm. Patchy fog before 11am. Otherwise, partly sunny, with a high near 70. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Patchy Fog
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms, mainly before 1am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 61. Southeast wind 3 to 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    T-storms and
    Patchy Fog

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. Patchy fog before 9am. High near 70. Light southwest wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 60. Light west southwest wind. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely then
    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 71. Chance of precipitation is 80%.

    High: 71 °F

    Chance
    Showers then
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 59. Chance of precipitation is 80%.

    Low: 59 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 62. Chance of precipitation is 80%.

    High: 62 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 56. Chance of precipitation is 80%.

    Low: 56 °F

    Showers

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 61. North wind 3 to 5 mph.
Saturday
A 30 percent chance of showers and thunderstorms after 2pm. Patchy fog before 11am. Otherwise, partly sunny, with a high near 70. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 50 percent chance of showers and thunderstorms, mainly before 1am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 61. Southeast wind 3 to 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. Patchy fog before 9am. High near 70. Light southwest wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 60. Light west southwest wind. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 71. Chance of precipitation is 80%.
Monday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 59. Chance of precipitation is 80%.
Tuesday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 62. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 56. Chance of precipitation is 80%.
Wednesday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 57. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 56.
Thursday Night
Mostly cloudy, with a low around 51.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grandfather Mountain NC
 36.1°N 81.84°W (Elev. 4432 ft)
Last Update:
7:19 pm EDT Sep 18, 2026
Forecast Valid:
1am EDT Sep 19, 2026-6pm EDT Sep 25, 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