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

Snow Squalls in the Northeast U.S. on Thursday; Heavy Rain Along the Gulf Coast

An arctic cold front will move through the Great Lakes and Northeast on Thursday, bringing moderate to heavy snow, strong winds, and possible whiteout conditions through Thursday afternoon. A storm system interacting with Gulf moisture will bring moderate to heavy rainfall to the western and central Gulf Coast on Thursday. Isolated instances of flash flooding will be 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.

Clear

37°F

3°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 04 Dec 04:20 AM PST
Extended Forecast for

Saint Helena CA

Coastal Flood Advisory December 4, 04:33am until December 7, 03:00pm
Cold Weather Advisory December 4, 04:33am until December 4, 08:00am
Click here for hazard details and duration
Coastal Flood Advisory
...
  •  
    Coastal Flood Advisory December 4, 04:33am until December 7, 03:00pm
    Cold Weather Advisory December 4, 04:33am until December 4, 08:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 62 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. Light and variable wind.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Patchy fog before 1am. Otherwise, mostly clear, with a low around 43. Calm wind becoming north around 6 mph after midnight.

    Low: 43 °F

    Patchy Fog

  • Saturday

    Saturday: Areas of fog between 10am and noon. Otherwise, sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 64 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog. Otherwise, partly cloudy, with a low around 45.

    Low: 45 °F

    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 65.

    High: 65 °F

    Areas Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog. Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog

Detailed Forecast

Today
Sunny, with a high near 62. South wind around 5 mph becoming calm in the afternoon.
Tonight
Mostly clear, with a low around 42. Light and variable wind.
Friday
Sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the afternoon.
Friday Night
Patchy fog before 1am. Otherwise, mostly clear, with a low around 43. Calm wind becoming north around 6 mph after midnight.
Saturday
Areas of fog between 10am and noon. Otherwise, sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the afternoon.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 45.
Sunday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 65.
Sunday Night
Patchy fog. Otherwise, partly cloudy, with a low around 43.
Monday
Patchy fog before 10am. Otherwise, sunny, with a high near 66.
Monday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 45.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 66.
Tuesday Night
Areas of fog. Otherwise, mostly cloudy, with a low around 46.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.51°N 122.46°W (Elev. 203 ft)
Last Update:
2:09 am PST Dec 4, 2025
Forecast Valid:
4am PST Dec 4, 2025-6pm PST Dec 10, 2025
 
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Additional Resources

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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