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

Rock Hill, Rock Hill - York County Airport (KUZA)

Lat: 34.98°NLon: 81.06°WElev: 669ft.

Fair

48°F

9°C

Humidity 89%
Wind Speed SW 3 mph
Barometer 30.20 in (1022.5 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 23 Dec 11:54 pm EST
Extended Forecast for

Fort Mill SC

  • Overnight

    Overnight: Clear, with a low around 47. West southwest wind 3 to 5 mph.

    Low: 47 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72. Light and variable wind.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 50. Light and variable wind.

    Low: 50 °F

    Increasing
    Clouds

  • Christmas Day

    Christmas Day: Mostly sunny, with a high near 74. South wind 5 to 9 mph becoming west in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49. Calm wind becoming east northeast around 5 mph after midnight.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 47. West southwest wind 3 to 5 mph.
Wednesday
Sunny, with a high near 72. Light and variable wind.
Wednesday Night
Increasing clouds, with a low around 50. Light and variable wind.
Christmas Day
Mostly sunny, with a high near 74. South wind 5 to 9 mph becoming west in the afternoon.
Thursday Night
Partly cloudy, with a low around 49. Calm wind becoming east northeast around 5 mph after midnight.
Friday
Mostly cloudy, with a high near 59.
Friday Night
Mostly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Mostly cloudy, with a high near 70.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 23.
Tuesday
Sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Mill SC
 35.01°N 80.95°W (Elev. 640 ft)
Last Update:
12:17 am EST Dec 24, 2025
Forecast Valid:
12am EST Dec 24, 2025-6pm EST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation