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

Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Hazardous Weather Conditions

Current conditions at

Novato / Gnoss Field (KDVO)

Lat: 38.14178°NLon: 122.55463°WElev: 3.0ft.

Mostly Cloudy

45°F

7°C

Humidity 87%
Wind Speed SSE 8 MPH
Barometer 30.27 in (1025.06 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 30 Dec 09:55 AM PST
Extended Forecast for

Sonoma CA

Coastal Flood Advisory December 31, 05:00am until January 4, 02:00pm
Click here for hazard details and duration
Coastal Flood Advisory

  • Today

    Today: Mostly cloudy, with a high near 54. East southeast wind 5 to 8 mph.

    High: 54 °F

    Mostly Cloudy

  • Tonight

    Tonight: Cloudy, with a low around 43. Light northeast wind.

    Low: 43 °F

    Cloudy

  • Wednesday

    Wednesday: Rain likely after 10am. Patchy fog after 3pm. Otherwise, cloudy, with a high near 51. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 51 °F

    Rain Likely
    and Patchy
    Fog

  • Wednesday Night

    Wednesday Night: Rain. Widespread fog, mainly after 4am. Low around 46. East northeast wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Rain and Fog

  • New Year's Day

    New Year's Day: Rain. Widespread fog, mainly before 10am. High near 54. Calm wind becoming south southeast around 6 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 54 °F

    Rain and Fog

  • Thursday Night

    Thursday Night: Rain before 4am, then showers likely and possibly a thunderstorm after 4am. Areas of fog. Low around 51. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers and
    Areas Fog

  • Friday

    Friday: Showers likely and possibly a thunderstorm, then rain after 10am. Areas of fog before 10am. High near 55. Chance of precipitation is 80%.

    High: 55 °F

    Showers and
    Areas Fog

  • Friday Night

    Friday Night: Rain. Patchy fog after 10pm. Otherwise, cloudy, with a low around 44.

    Low: 44 °F

    Rain and
    Patchy Fog

  • Saturday

    Saturday: Rain likely. Areas of fog. Otherwise, mostly cloudy, with a high near 52.

    High: 52 °F

    Rain Likely
    and Areas Fog

Detailed Forecast

Today
Mostly cloudy, with a high near 54. East southeast wind 5 to 8 mph.
Tonight
Cloudy, with a low around 43. Light northeast wind.
Wednesday
Rain likely after 10am. Patchy fog after 3pm. Otherwise, cloudy, with a high near 51. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Widespread fog, mainly after 4am. Low around 46. East northeast wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
New Year's Day
Rain. Widespread fog, mainly before 10am. High near 54. Calm wind becoming south southeast around 6 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain before 4am, then showers likely and possibly a thunderstorm after 4am. Areas of fog. Low around 51. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers likely and possibly a thunderstorm, then rain after 10am. Areas of fog before 10am. High near 55. Chance of precipitation is 80%.
Friday Night
Rain. Patchy fog after 10pm. Otherwise, cloudy, with a low around 44.
Saturday
Rain likely. Areas of fog. Otherwise, mostly cloudy, with a high near 52.
Saturday Night
Rain likely. Widespread fog, mainly after 2am. Otherwise, mostly cloudy, with a low around 42.
Sunday
A chance of rain. Widespread fog. Otherwise, mostly cloudy, with a high near 52.
Sunday Night
Rain likely. Widespread fog. Otherwise, mostly cloudy, with a low around 41.
Monday
Rain likely. Widespread fog. Otherwise, mostly cloudy, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
Last Update:
12:27 am PST Dec 30, 2025
Forecast Valid:
10am PST Dec 30, 2025-6pm PST Jan 5, 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