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 >

Hazardous Weather Conditions

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125.0ft.

light rain,mist

54°F

12°C

Humidity 89%
Wind Speed WSW 14 MPH
Barometer 29.83 in (1010.16 mb)
Dewpoint 51°F (11°C)
Visibility 5.00 mi
Last update 26 Dec 02:02 PM PST
Extended Forecast for

6 Miles SSW Saint Helena CA

Flood Watch December 26, 02:28pm until December 26, 10:00pm
Flood Advisory until December 26, 05:30pm
Click here for hazard details and duration
Flood Watch
Flood Advisory
  •  
    Flood Watch December 26, 02:28pm until December 26, 10:00pm
    Flood Advisory until December 26, 05:30pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 48 °F

    Chance
    Showers

  • Tonight

    Tonight: A 40 percent chance of showers before 1am. Partly cloudy, with a low around 41. West northwest wind 3 to 5 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 48. North wind around 6 mph.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38. Light north wind.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 50. North northeast wind around 6 mph.

    High: 50 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 39.

    Low: 39 °F

    Clear

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 48. Southwest wind 7 to 9 mph, with gusts as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 40 percent chance of showers before 1am. Partly cloudy, with a low around 41. West northwest wind 3 to 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Sunny, with a high near 48. North wind around 6 mph.
Saturday Night
Partly cloudy, with a low around 38. Light north wind.
Sunday
Sunny, with a high near 50. North northeast wind around 6 mph.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 52.
Monday Night
Clear, with a low around 39.
Tuesday
Sunny, with a high near 53.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Mostly sunny, with a high near 52.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 43.
New Year's Day
A chance of showers. Mostly cloudy, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSW Saint Helena CA
 38.43°N 122.52°W (Elev. 1093 ft)
Last Update:
12:27 pm PST Dec 26, 2025
Forecast Valid:
2pm PST Dec 26, 2025-6pm PST Jan 1, 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