Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Fog

34°F

1°C

Humidity 100%
Wind Speed NW 3 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 34°F (1°C)
Visibility 0.50 mi
Last update 30 Dec 02:53 AM PST
Extended Forecast for

2 Miles W Guerneville CA

Coastal Flood Advisory December 31, 05:00am until January 4, 02:00pm
Cold Weather Advisory until December 30, 09:00am
Dense Fog Advisory December 30, 03:08am until December 30, 10:00am
Click here for hazard details and duration
Coastal Flood Advisory
Cold Weather Advisory
Dense Fog Advisory
  •  
    Cold Weather Advisory until December 30, 09:00am
    Dense Fog Advisory December 30, 03:08am until December 30, 10:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 37 °F

    Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 57. Calm wind becoming east around 5 mph.

    High: 57 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 10 percent chance of rain after 4am.  Mostly cloudy, with a low around 44. Northeast wind 3 to 5 mph.

    Low: 44 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Rain likely, mainly after 10am.  Patchy fog after 3pm.  Otherwise, cloudy, with a high near 53. Calm wind becoming east around 5 mph in the afternoon.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F

    Rain Likely
    and Patchy
    Fog

  • Wednesday Night

    Wednesday Night: Rain.  Areas of fog. Low around 48. East wind around 6 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Rain and
    Areas Fog

  • New Year's Day

    New Year's Day: Rain.  Areas of dense fog. High near 54. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 54 °F

    Rain and
    Areas Dense
    Fog

  • Thursday Night

    Thursday Night: Rain before 4am, then showers and possibly a thunderstorm after 4am.  Areas of fog. Low around 51. Chance of precipitation is 90%.

    Low: 51 °F

    Showers and
    Areas Fog

  • Friday

    Friday: Showers and possibly a thunderstorm before 10am, then rain after 10am.  Patchy fog before 7am.  Otherwise, cloudy, with a high near 55.

    High: 55 °F

    Showers and
    Patchy Fog

Detailed Forecast

Overnight
Clear, with a low around 37. Light north northeast wind.
Tuesday
Increasing clouds, with a high near 57. Calm wind becoming east around 5 mph.
Tuesday Night
A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 44. Northeast wind 3 to 5 mph.
Wednesday
Rain likely, mainly after 10am. Patchy fog after 3pm. Otherwise, cloudy, with a high near 53. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Areas of fog. Low around 48. East wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
New Year's Day
Rain. Areas of dense fog. High near 54. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain before 4am, then showers and possibly a thunderstorm after 4am. Areas of fog. Low around 51. Chance of precipitation is 90%.
Friday
Showers and possibly a thunderstorm before 10am, then rain after 10am. Patchy fog before 7am. Otherwise, cloudy, with a high near 55.
Friday Night
Rain. Patchy fog after 10pm. Otherwise, cloudy, with a low around 45.
Saturday
Rain. Areas of fog. Otherwise, mostly cloudy, with a high near 52.
Saturday Night
Rain likely. Areas of fog. Otherwise, mostly cloudy, with a low around 43.
Sunday
Rain likely. Widespread fog. Otherwise, mostly cloudy, with a high near 53.
Sunday Night
Rain likely. Areas of fog. Otherwise, mostly cloudy, with a low around 43.
Monday
Rain likely. Areas of fog. Otherwise, mostly cloudy, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Guerneville CA
 38.51°N 123.04°W (Elev. 558 ft)
12:27 am PST Dec 30, 2025
3am PST Dec 30, 2025-6pm PST Jan 5, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database