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.

A Few Clouds

68°F

20°C

Humidity 63%
Wind Speed SW 7 mph
Barometer 30.04 in (1016.8 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 25 Dec 6:53 pm EST
Extended Forecast for

4 Miles E Slater-Marietta SC

  • Tonight

    Tonight: Mostly clear, with a low around 50. Light north wind.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of rain between 10am and 1pm. Mostly cloudy, with a high near 61. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 61 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 51. West southwest wind 3 to 5 mph.

    Low: 51 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 75. Light and variable wind.

    High: 75 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51. Light and variable wind.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of rain before 7am, then a chance of showers between 7am and 4pm. Mostly cloudy, with a high near 63. Chance of precipitation is 50%.

    High: 63 °F

    Chance Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 50. Light north wind.
Friday
A 20 percent chance of rain between 10am and 1pm. Mostly cloudy, with a high near 61. Calm wind becoming southeast around 6 mph in the afternoon.
Friday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 51. West southwest wind 3 to 5 mph.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 75. Light and variable wind.
Saturday Night
Partly cloudy, with a low around 51. Light and variable wind.
Sunday
Mostly cloudy, with a high near 60.
Sunday Night
Mostly cloudy, with a low around 55.
Monday
A chance of rain before 7am, then a chance of showers between 7am and 4pm. Mostly cloudy, with a high near 63. Chance of precipitation is 50%.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 47.
Tuesday Night
Mostly clear, with a low around 26.
Wednesday
Sunny, with a high near 52.
Wednesday Night
Mostly clear, with a low around 28.
New Year's Day
Sunny, with a high near 53.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Slater-Marietta SC
 35.04°N 82.43°W (Elev. 1099 ft)
Last Update:
6:33 pm EST Dec 25, 2025
Forecast Valid:
7pm EST Dec 25, 2025-6pm EST Jan 1, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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