National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Winter Storm to Impact the Western and Central U.S.

A developing storm will impact the western mountain ranges through Thursday. This storm will track inland across portions of the Rockies, High Plains and upper Mississippi River Valley for the remainder of this week. Further south, the chance for severe weather will extend from the Ohio Valley into the lower Mississippi River Valley Friday into Friday night. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125ft.

Mostly Cloudy

46°F

8°C

Humidity 75%
Wind Speed NNW 8 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 09 Dec 06:35 AM PST
Extended Forecast for

4 Miles W Saint Helena CA

  • Today

    Today: Sunny, with a steady temperature around 47. West northwest wind 5 to 13 mph, with gusts as high as 18 mph.

    Sunny

    High: 47 °F

  • Tonight

    Tonight: Mostly clear, with a steady temperature around 45. North wind 5 to 13 mph, with gusts as high as 18 mph.

    Mostly Clear

    Low: 45 °F

  • Friday

    Friday: Sunny, with a high near 49. North wind 5 to 11 mph.

    Sunny

    High: 49 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 41. Calm wind becoming south southwest 5 to 7 mph in the evening.

    Partly Cloudy

    Low: 41 °F

  • Saturday

    Saturday: A 30 percent chance of rain after 4pm. Mostly sunny, with a high near 49. Southwest wind 8 to 13 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.

    Mostly Sunny
    then Chance
    Rain

    High: 49 °F

  • Saturday
    Night

    Saturday Night: Rain, mainly after 10pm. Low around 45. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Rain

    Low: 45 °F

  • Sunday

    Sunday: Rain. High near 52. Chance of precipitation is 90%.

    Rain

    High: 52 °F

  • Sunday
    Night

    Sunday Night: Rain. Cloudy, with a low around 48.

    Rain

    Low: 48 °F

  • Monday

    Monday: Rain. Cloudy, with a high near 54.

    Rain

    High: 54 °F

Detailed Forecast

Today
Sunny, with a steady temperature around 47. West northwest wind 5 to 13 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a steady temperature around 45. North wind 5 to 13 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 49. North wind 5 to 11 mph.
Friday Night
Partly cloudy, with a low around 41. Calm wind becoming south southwest 5 to 7 mph in the evening.
Saturday
A 30 percent chance of rain after 4pm. Mostly sunny, with a high near 49. Southwest wind 8 to 13 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain, mainly after 10pm. Low around 45. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
Rain. High near 52. Chance of precipitation is 90%.
Sunday Night
Rain. Cloudy, with a low around 48.
Monday
Rain. Cloudy, with a high near 54.
Monday Night
Rain. Cloudy, with a low around 43.
Tuesday
Rain and snow likely. Partly sunny, with a high near 47.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 42.
Wednesday
A chance of rain. Mostly cloudy, with a high near 47.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
4 Miles W Saint Helena CA
 38.52°N 122.55°W (Elev. 1998 ft)
Last Update:
4:02 am PST Dec 9, 2021
Forecast Valid:
6am PST Dec 9, 2021-6pm PST Dec 15, 2021
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation