Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

haze

46°F

8°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 46°F (8°C)
Visibility 7.00 mi
Last update 21 Jan 11:35 AM PST
Extended Forecast for

7 Miles WSW Saint Helena CA

  • Today

    Today: Cloudy, with a high near 60. Calm wind.

    High: 60 °F

    Cloudy

  • Tonight

    Tonight: Cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Cloudy

  • Thursday

    Thursday: Patchy fog between 9am and 10am.  Otherwise, partly sunny, with a high near 60. Calm wind.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 9pm.  Otherwise, partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 59. Calm wind.

    High: 59 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

Detailed Forecast

Today
Cloudy, with a high near 60. Calm wind.
Tonight
Cloudy, with a low around 48. Calm wind.
Thursday
Patchy fog between 9am and 10am. Otherwise, partly sunny, with a high near 60. Calm wind.
Thursday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 46. Calm wind.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 59. Calm wind.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 57.
Sunday Night
Mostly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 59.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
Partly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles WSW Saint Helena CA
 38.45°N 122.59°W (Elev. 535 ft)
2:13 am PST Jan 21, 2026
11am PST Jan 21, 2026-6pm PST Jan 27, 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