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

Tracking Winter Storm and Severe Weather Impacts Through This Weekend

Heavy mountain snow will continue into Thursday afternoon across the Cascades. Two fast moving storms will track from the southern Rockies to the Great Lakes Thursday and then Friday into Sunday with areas of gusty winds, and heavy snow. In the Southeast U.S., severe thunderstorms and heavy to excessive rainfall are forecast on Friday. 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

45°F

7°C

Humidity 75%
Wind Speed W 9 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 08 Jan 03:15 AM PST
Extended Forecast for

Guerneville CA

Cold Weather Advisory January 9, 01:00am until January 9, 09:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 43. West northwest wind around 6 mph.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 52. North northwest wind around 7 mph.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Patchy frost after 3am. Otherwise, partly cloudy, with a low around 36. North wind around 5 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Friday

    Friday: Areas of frost before 9am. Otherwise, sunny, with a high near 55. Calm wind.

    High: 55 °F

    Areas Frost
    then Sunny

  • Friday Night

    Friday Night: Patchy frost after 3am. Otherwise, partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Areas of frost before 8am. Otherwise, mostly sunny, with a high near 56.

    High: 56 °F

    Areas Frost
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 43. West northwest wind around 6 mph.
Thursday
Sunny, with a high near 52. North northwest wind around 7 mph.
Thursday Night
Patchy frost after 3am. Otherwise, partly cloudy, with a low around 36. North wind around 5 mph becoming calm in the evening.
Friday
Areas of frost before 9am. Otherwise, sunny, with a high near 55. Calm wind.
Friday Night
Patchy frost after 3am. Otherwise, partly cloudy, with a low around 37. Calm wind.
Saturday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 56.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
Partly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Guerneville CA
 38.5°N 122.98°W (Elev. 397 ft)
Last Update:
12:26 am PST Jan 8, 2026
Forecast Valid:
3am PST Jan 8, 2026-6pm PST Jan 14, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation