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

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Current conditions at

Watauga County Hospital Heliport (KTNB)

Lat: 36.2°NLon: 81.65°WElev: 3146ft.

Overcast

50°F

10°C

Humidity 100%
Wind Speed W 20 G 38 mph
Barometer 30.19 in
Dewpoint 50°F (10°C)
Visibility 7.00 mi
Wind Chill44°F (7°C)
Last update 24 Dec 3:35 am EST
Extended Forecast for

4 Miles SSW Mountain City TN

  • Overnight

    Overnight: A 30 percent chance of showers, mainly before 5am. Cloudy, with a low around 48. West wind around 5 mph.

    Low: 48 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 10 percent chance of showers before 7am. Partly sunny, with a high near 63. West wind around 5 mph becoming calm.

    High: 63 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 48. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Mostly Cloudy
    then Chance
    Showers

  • Christmas Day

    Christmas Day: Showers likely, mainly after 7am. Cloudy, with a high near 64. West wind 5 to 10 mph. Chance of precipitation is 70%.

    High: 64 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely, mainly after 1am. Cloudy, with a low around 50. Calm wind. Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 60. Calm wind becoming south around 5 mph in the afternoon.

    High: 60 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 49. South wind around 5 mph becoming west after midnight.

    Low: 49 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 68.

    High: 68 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly before 5am. Cloudy, with a low around 48. West wind around 5 mph.
Wednesday
A 10 percent chance of showers before 7am. Partly sunny, with a high near 63. West wind around 5 mph becoming calm.
Wednesday Night
A 50 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 48. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Christmas Day
Showers likely, mainly after 7am. Cloudy, with a high near 64. West wind 5 to 10 mph. Chance of precipitation is 70%.
Thursday Night
Showers likely, mainly after 1am. Cloudy, with a low around 50. Calm wind. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 60. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 49. South wind around 5 mph becoming west after midnight.
Saturday
Mostly cloudy, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 50.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 66.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 25. Chance of precipitation is 50%.
Monday
A chance of rain and snow showers. Mostly sunny, with a high near 39. Breezy. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 12.
Tuesday
Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Mountain City TN
 36.41°N 81.83°W (Elev. 2297 ft)
Last Update:
12:31 am EST Dec 24, 2025
Forecast Valid:
3am EST Dec 24, 2025-6pm EST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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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