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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Greenville Downtown Airport (KGMU)

Lat: 34.85°NLon: 82.35°WElev: 1010ft.

Overcast

56°F

13°C

Humidity 87%
Wind Speed SW 7 mph
Barometer 30.21 in (1022.3 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 25 Dec 1:53 am EST
Extended Forecast for

Sans Souci SC

  • Overnight

    Overnight: Partly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Partly Cloudy

  • Christmas Day

    Christmas Day: Sunny, with a high near 76. Light west wind increasing to 5 to 10 mph in the morning.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. West wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of rain, mainly before 11am. Mostly cloudy, with a high near 67. Light and variable wind becoming east 5 to 7 mph in the morning.

    High: 67 °F

    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53. West southwest wind around 7 mph.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 51. Calm wind.
Christmas Day
Sunny, with a high near 76. Light west wind increasing to 5 to 10 mph in the morning.
Thursday Night
Partly cloudy, with a low around 51. West wind around 6 mph becoming calm in the evening.
Friday
A 30 percent chance of rain, mainly before 11am. Mostly cloudy, with a high near 67. Light and variable wind becoming east 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around 53. West southwest wind around 7 mph.
Saturday
Sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly cloudy, with a high near 64.
Sunday Night
A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 54.
Monday
A 40 percent chance of rain before 1pm. Mostly cloudy, with a high near 64.
Monday Night
Mostly cloudy, with a low around 27.
Tuesday
Sunny, with a high near 47.
Tuesday Night
Clear, with a low around 24.
Wednesday
Sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sans Souci SC
 34.9°N 82.42°W (Elev. 1001 ft)
Last Update:
12:18 am EST Dec 25, 2025
Forecast Valid:
2am EST Dec 25, 2025-6pm EST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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