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 Spartanburg International Airport (KGSP)

Lat: 34.91° N Lon: 82.21° W Elev: 955 ft.

Fair

52°F

11°C

Humidity 93%
Wind Speed Calm
Barometer 30.03 in (1016.2 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 26 Dec 4:53 am EST
Detailed forecast for

Greenville Mountains

Today
Mostly cloudy. A slight chance of rain this morning. Patchy fog this morning. Cooler with highs in the upper 50s. Northeast winds around 5 mph, becoming south around 5 mph this afternoon. Chance of rain 20 percent.
Tonight
Mostly cloudy in the evening, then clearing. Patchy fog. Lows around 50. West winds around 5 mph.
Saturday
Sunny. Highs in the lower 70s. Northwest winds around 5 mph, becoming southwest in the afternoon.
Saturday Night
Mostly clear in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds around 5 mph.
Sunday
Mostly cloudy. Highs in the upper 50s. East winds around 5 mph, becoming south around 5 mph in the afternoon.
Sunday Night
Cloudy. A chance of rain after midnight. Breezy. Near steady temperatures in the mid 50s. Chance of rain 30 percent.
Monday
Mostly cloudy in the morning, then becoming mostly sunny. A 50 percent chance of rain. Breezy with highs in the lower 60s. Temperature falling into the lower 50s in the afternoon.
Monday Night
Mostly clear. Much cooler with lows in the upper 20s.
Tuesday
Sunny, cooler with highs in the lower 40s.
Tuesday Night
Mostly clear. Lows in the mid 20s.
Wednesday
Sunny. Highs around 50.
Wednesday Night
Partly cloudy. Lows in the upper 20s.
New Years Day
Mostly sunny. Highs in the upper 40s.



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334 AM EST Fri Dec 26 2025
 
 

Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database