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

Heavy Rain in the Southern U.S.; Active Weather Continues in Alaska

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains today, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. Another Bering system will impact the Alaskan West Coast and Central Interior through the weekend bringing moderate to heavy snow, high winds, and/or some blizzard conditions. 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.

Rain

51°F

11°C

Humidity 92%
Wind Speed SE 12 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 49°F (9°C)
Visibility 9.00 mi
Last update 15 Feb 03:53 AM PST
Extended Forecast for

Saint Helena CA

Coastal Flood Advisory February 15, 07:00am until February 17, 03:00pm
Click here for hazard details and duration
Coastal Flood Advisory

  • Overnight

    Overnight: Rain likely, mainly after 5am. Mostly cloudy, with a low around 46. East southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Rain Likely

  • Sunday

    Sunday: Rain. High near 57. Southeast wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 57 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Patchy fog between 11pm and 3am. Low around 45. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 45 °F

    Rain and
    Patchy Fog

  • Washington's Birthday

    Washington's Birthday: Rain. Patchy fog between 7am and 10am. High near 53. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 53 °F

    Rain and
    Patchy Fog

  • Monday Night

    Monday Night: Rain, mainly after 4am. Low around 39. Northwest wind 3 to 7 mph. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain

  • Tuesday

    Tuesday: Rain before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain and possibly a thunderstorm after 4pm. High near 49. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 49 °F

    Showers

  • Tuesday Night

    Tuesday Night: Rain, mainly before 10pm. Patchy fog after 4am. Low around 33. Chance of precipitation is 80%.

    Low: 33 °F

    Rain then
    Chance Rain
    and Patchy
    Fog

  • Wednesday

    Wednesday: Rain, mainly after 10am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 52.

    High: 52 °F

    Rain and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Rain, mainly before 10pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 36.

    Low: 36 °F

    Rain and
    Patchy Fog

Detailed Forecast

Overnight
Rain likely, mainly after 5am. Mostly cloudy, with a low around 46. East southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain. High near 57. Southeast wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
Rain. Patchy fog between 11pm and 3am. Low around 45. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Washington's Birthday
Rain. Patchy fog between 7am and 10am. High near 53. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Rain, mainly after 4am. Low around 39. Northwest wind 3 to 7 mph. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain and possibly a thunderstorm after 4pm. High near 49. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
Rain, mainly before 10pm. Patchy fog after 4am. Low around 33. Chance of precipitation is 80%.
Wednesday
Rain, mainly after 10am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 52.
Wednesday Night
Rain, mainly before 10pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 36.
Thursday
Rain likely, mainly before 10am. Patchy fog before 7am. Otherwise, partly sunny, with a high near 52.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 36.
Friday
A chance of rain. Mostly cloudy, with a high near 54.
Friday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 39.
Saturday
Rain likely. Patchy fog. Otherwise, mostly cloudy, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.49°N 122.45°W (Elev. 230 ft)
Last Update:
3:03 am PST Feb 15, 2026
Forecast Valid:
4am PST Feb 15, 2026-6pm PST Feb 21, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation