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.

fog,mist

41°F

5°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.3 in (1026.08 mb)
Dewpoint 41°F (5°C)
Visibility 0.50 mi
Last update 07 Dec 07:20 PM PST
Extended Forecast for

4 Miles SSW Saint Helena CA

  • Tonight

    Tonight: Mostly clear, with a low around 46. Calm wind becoming north northeast around 6 mph after midnight.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 54. Light and variable wind.

    High: 54 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. North wind 3 to 5 mph.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57. North wind around 5 mph becoming calm  in the morning.

    High: 57 °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. Calm wind becoming north northeast around 6 mph after midnight.
Monday
Sunny, with a high near 54. Light and variable wind.
Monday Night
Mostly clear, with a low around 47. North wind 3 to 5 mph.
Tuesday
Sunny, with a high near 57. North wind around 5 mph becoming calm in the morning.
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 59.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 56.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Saint Helena CA
 38.46°N 122.5°W (Elev. 2372 ft)
6:20 pm PST Dec 7, 2025
7pm 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