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

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Current conditions at

Greenville Downtown Airport (KGMU)

Lat: 34.85°NLon: 82.35°WElev: 1010ft.

Fog/Mist

55°F

13°C

Humidity 96%
Wind Speed Calm
Barometer 29.97 in (1014.7 mb)
Dewpoint 54°F (12°C)
Visibility 3.00 mi
Last update 27 Dec 6:53 am EST
Extended Forecast for

Simpsonville SC

  • Today

    Today: Patchy dense fog before 10am. Otherwise, mostly sunny, with a high near 75. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 75 °F

    Patchy Dense
    Fog then
    Sunny

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, increasing clouds, with a low around 50. Light and variable wind becoming northeast 5 to 8 mph after midnight.

    Low: 50 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: A 30 percent chance of rain, mainly before 1pm. Patchy fog before 9am. Otherwise, cloudy, with a high near 60. East northeast wind 6 to 9 mph.

    High: 60 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after 2am. Mostly cloudy, with a low around 53. Light and variable wind becoming southwest 9 to 14 mph in the evening. Winds could gust as high as 23 mph.

    Low: 53 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: A 30 percent chance of rain, mainly before 1pm. Partly sunny, with a high near 65. Southwest wind 16 to 18 mph, with gusts as high as 29 mph.

    High: 65 °F

    Chance Rain

  • Monday Night

    Monday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 23.

    Low: 23 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

Detailed Forecast

Today
Patchy dense fog before 10am. Otherwise, mostly sunny, with a high near 75. Calm wind becoming south southwest around 6 mph in the afternoon.
Tonight
Patchy fog after 1am. Otherwise, increasing clouds, with a low around 50. Light and variable wind becoming northeast 5 to 8 mph after midnight.
Sunday
A 30 percent chance of rain, mainly before 1pm. Patchy fog before 9am. Otherwise, cloudy, with a high near 60. East northeast wind 6 to 9 mph.
Sunday Night
A 20 percent chance of rain after 2am. Mostly cloudy, with a low around 53. Light and variable wind becoming southwest 9 to 14 mph in the evening. Winds could gust as high as 23 mph.
Monday
A 30 percent chance of rain, mainly before 1pm. Partly sunny, with a high near 65. Southwest wind 16 to 18 mph, with gusts as high as 29 mph.
Monday Night
Mostly clear, with a low around 28.
Tuesday
Sunny, with a high near 48.
Tuesday Night
Clear, with a low around 23.
Wednesday
Sunny, with a high near 50.
Wednesday Night
Mostly clear, with a low around 30.
New Year's Day
Sunny, with a high near 55.
Thursday Night
Partly cloudy, with a low around 27.
Friday
Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Simpsonville SC
 34.73°N 82.25°W (Elev. 810 ft)
Last Update:
6:08 am EST Dec 27, 2025
Forecast Valid:
7am EST Dec 27, 2025-6pm EST Jan 2, 2026
 
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