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

Tracking Two Storms Impacting the Central and Eastern U.S. Through This Weekend

Two storm systems will track through the central and eastern U.S. through this weekend with areas of gusty winds, rain, and heavy snow. Severe thunderstorms are forecast Friday from the central Gulf Coast into parts of the lower Mississippi, Tennessee and Ohio Valleys. Heavy to excessive rainfall is forecast from the lower Mississippi River Valley to the Tennessee Valley which may bring flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Clear

36°F

2°C

Humidity 93%
Wind Speed SW 3 MPH
Barometer 30.36 in (1028.11 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 09 Jan 01:35 AM PST
Extended Forecast for

Saint Helena CA

Cold Weather Advisory until January 9, 09:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory until January 9, 09:00am

    NOW until 9:00am Fri

    Cold Weather Advisory

  • Overnight

    Low: 37 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 55. Light and variable wind.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Patchy frost after 3am. Otherwise, mostly clear, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Areas of frost before 9am. Otherwise, mostly sunny, with a high near 56. Calm wind.

    High: 56 °F

    Areas Frost
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy frost after 4am. Otherwise, mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy
    then Patchy
    Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, partly sunny, with a high near 59.

    High: 59 °F

    Areas Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 37. Calm wind.
Friday
Sunny, with a high near 55. Light and variable wind.
Friday Night
Patchy frost after 3am. Otherwise, mostly clear, with a low around 35. Calm wind.
Saturday
Areas of frost before 9am. Otherwise, mostly sunny, with a high near 56. Calm wind.
Saturday Night
Patchy frost after 4am. Otherwise, mostly cloudy, with a low around 36. Calm wind.
Sunday
Areas of frost before 8am. Otherwise, partly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 38.
Monday
Sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Sunny, with a high near 67.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.51°N 122.46°W (Elev. 203 ft)
Last Update:
12:26 am PST Jan 9, 2026
Forecast Valid:
1am PST Jan 9, 2026-6pm PST Jan 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation