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

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 N 0 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 34°F (1°C)
Visibility 0.25 mi
Last update 30 Dec 05:00 AM PST
Extended Forecast for

Monte Rio 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, 05:26am 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, 05:26am until December 30, 10:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 58. East wind around 6 mph.

    High: 58 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 45. East wind 3 to 5 mph.

    Low: 45 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Rain likely, mainly after 10am. Patchy fog after 2pm. Otherwise, cloudy, with a high near 54. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Rain Likely
    and Patchy
    Fog

  • Wednesday Night

    Wednesday Night: Rain. Areas of fog. Low around 48. East wind 5 to 7 mph. Chance of precipitation is 100%. 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 55. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 55 °F

    Rain and
    Areas Dense
    Fog

  • Thursday Night

    Thursday Night: Rain before 4am, then showers and possibly a thunderstorm after 4am. Patchy fog. Low around 52. Chance of precipitation is 90%.

    Low: 52 °F

    Showers and
    Patchy 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
Mostly clear, with a low around 38. East wind around 5 mph.
Tuesday
Increasing clouds, with a high near 58. East wind around 6 mph.
Tuesday Night
A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 45. East wind 3 to 5 mph.
Wednesday
Rain likely, mainly after 10am. Patchy fog after 2pm. Otherwise, cloudy, with a high near 54. Calm wind becoming east 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. Areas of fog. Low around 48. East wind 5 to 7 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
New Year's Day
Rain. Areas of dense fog. High near 55. 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. Patchy fog. Low around 52. 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 46.
Saturday
Rain. Areas of fog. Otherwise, mostly cloudy, with a high near 53.
Saturday Night
Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 43.
Sunday
Rain likely. Areas of fog. Otherwise, mostly cloudy, with a high near 54.
Sunday Night
Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 44.
Monday
Rain likely. Areas of fog. Otherwise, mostly cloudy, with a high near 55.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monte Rio CA
 38.47°N 123°W (Elev. 525 ft)
Last Update:
12:27 am PST Dec 30, 2025
Forecast Valid:
5am 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