Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. 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 NE 4 MPH
Barometer 30.33 in (1027.09 mb)
Dewpoint 43°F (6°C)
Visibility 1.00 mi
Wind Chill41°F (5°C)
Last update 07 Dec 11:41 PM PST
Extended Forecast for

4 Miles SSW Saint Helena CA

  • Tonight

    Tonight: Mostly clear, with a low around 46. North northeast wind 3 to 5 mph.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 56. Light and variable wind.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. Calm wind becoming northwest around 5 mph in the evening.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 58. Light and variable wind.

    High: 58 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49. Calm wind becoming north around 6 mph in the evening.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Wednesday Night

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

    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

Detailed Forecast

Tonight
Mostly clear, with a low around 46. North northeast wind 3 to 5 mph.
Monday
Sunny, with a high near 56. Light and variable wind.
Monday Night
Mostly clear, with a low around 47. Calm wind becoming northwest around 5 mph in the evening.
Tuesday
Sunny, with a high near 58. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 49. Calm wind becoming north around 6 mph in the evening.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Mostly clear, with a low around 49.
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 47.
Saturday
Sunny, with a high near 58.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Mostly sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Saint Helena CA
 38.46°N 122.5°W (Elev. 2372 ft)
11:01 pm PST Dec 7, 2025
11pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
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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