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

KF6YUA Sebastopol (AR323)

Lat: 38.3803°NLon: 122.8242°WElev: 230.0ft.

NA

40°F

4°C

Humidity 99%
Wind Speed ESE 3 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 40°F (4°C)
Visibility NA
Last update 30 Dec 10:24 AM PST
Extended Forecast for

Graton 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: Patchy fog before 11am. Otherwise, partly sunny, with a high near 57. East southeast wind 3 to 5 mph.

    High: 57 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: A 10 percent chance of rain after 4am. Cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Rain likely, mainly after 10am. Patchy fog after 2pm. Otherwise, cloudy, with a high near 53. Light east northeast wind. 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. Widespread fog, mainly after 1am. Low around 48. Light east wind. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Rain and Fog

  • New Year's Day

    New Year's Day: Rain. Widespread dense fog, mainly before 7am. High near 55. Light and variable wind becoming south southeast 5 to 8 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Rain and
    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%. 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 and possibly a thunderstorm before 10am, then rain after 10am. Patchy fog before 7am. High near 56. Chance of precipitation is 80%.

    High: 56 °F

    Showers and
    Patchy 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 before 3pm, then patchy fog after 5pm. Otherwise, cloudy, with a high near 53.

    High: 53 °F

    Rain Likely
    and Areas Fog

Detailed Forecast

Today
Patchy fog before 11am. Otherwise, partly sunny, with a high near 57. East southeast wind 3 to 5 mph.
Tonight
A 10 percent chance of rain after 4am. Cloudy, with a low around 44. Calm wind.
Wednesday
Rain likely, mainly after 10am. Patchy fog after 2pm. Otherwise, cloudy, with a high near 53. Light east northeast wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Widespread fog, mainly after 1am. Low around 48. Light east wind. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
New Year's Day
Rain. Widespread dense fog, mainly before 7am. High near 55. Light and variable wind becoming south southeast 5 to 8 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter 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%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm before 10am, then rain after 10am. Patchy fog before 7am. High near 56. 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 before 3pm, then patchy fog after 5pm. Otherwise, cloudy, with a high near 53.
Saturday Night
Rain likely, mainly before 4am. Widespread fog, mainly after 10pm. Otherwise, mostly cloudy, with a low around 42.
Sunday
Rain likely. Widespread fog. Otherwise, mostly cloudy, with a high near 54.
Sunday Night
Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 42.
Monday
Rain likely. Areas of fog. Otherwise, mostly cloudy, with a high near 56.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Graton CA
 38.45°N 122.88°W (Elev. 95 ft)
Last Update:
12:27 am PST Dec 30, 2025
Forecast Valid:
10am PST Dec 30, 2025-6pm PST Jan 5, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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