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.

Mist

43°F

6°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 43°F (6°C)
Visibility 2.50 mi
Last update 21 Jan 02:20 AM PST
Extended Forecast for

6 Miles SSW Saint Helena CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58. Light and variable wind.

    High: 58 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Cloudy, with a steady temperature around 53. Calm wind.

    Low: 53 °F

    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 58. Light west southwest wind.

    High: 58 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 51. Calm wind.
Wednesday
Mostly cloudy, with a high near 58. Light and variable wind.
Wednesday Night
Cloudy, with a steady temperature around 53. Calm wind.
Thursday
Partly sunny, with a high near 58. Light west southwest wind.
Thursday Night
Partly cloudy, with a low around 48. Calm wind.
Friday
Mostly sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 44.
Sunday
Partly sunny, with a high near 55.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 56.
Monday Night
Mostly cloudy, with a low around 44.
Tuesday
Partly sunny, with a high near 57.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSW Saint Helena CA
 38.43°N 122.52°W (Elev. 1093 ft)
2:13 am PST Jan 21, 2026
2am PST Jan 21, 2026-6pm PST Jan 27, 2026
 
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