Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Fog

42°F

6°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 42°F (6°C)
Visibility 0.25 mi
Last update 08 Dec 09:36 PM PST
Extended Forecast for

6 Miles SW Saint Helena CA

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 51. Light north northwest wind.

    Low: 51 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 60. Light and variable wind.

    High: 60 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49. Calm wind becoming north around 5 mph after midnight.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 60. North wind around 5 mph becoming calm  in the morning.

    High: 60 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49. Light north wind.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a steady temperature around 51. Light north northwest wind.
Tuesday
Sunny, with a high near 60. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 49. Calm wind becoming north around 5 mph after midnight.
Wednesday
Sunny, with a high near 60. North wind around 5 mph becoming calm in the morning.
Wednesday Night
Mostly clear, with a low around 49. Light north wind.
Thursday
Sunny, with a high near 61.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 58.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
A slight chance of rain. Mostly cloudy, with a low around 49.
Monday
A chance of rain. Partly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SW Saint Helena CA
 38.45°N 122.56°W (Elev. 1594 ft)
12:26 pm PST Dec 8, 2025
9pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database