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

Critical Fire Weather in the High Plains; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central and southern High Plains Wednesday. Two Pacific storms will continue impacting the mountains of the western U.S. into Thursday with gusty winds and heavy snow. Heavy snow and gusty winds will continue to impact the northern Plains into the central Great Lakes Wednesday. 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.

Mostly Cloudy

44°F

7°C

Humidity 78%
Wind Speed NNW 9 MPH
Barometer 29.67 in (1004.74 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 17 Feb 05:53 PM PST
Extended Forecast for

6 Miles SSW Saint Helena CA

Cold Weather Advisory February 18, 12:00am until February 18, 09:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: A chance of rain and snow before 2am, then a chance of rain and snow after 3am. Partly cloudy, with a low around 34. West northwest wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of rain and snow before 3pm, then a chance of rain between 3pm and 4pm. Partly sunny, with a high near 47. Calm wind becoming west southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 47 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain, mainly after 9pm. Steady temperature around 43. South southwest wind 5 to 7 mph becoming southeast in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Rain

  • Thursday

    Thursday: Rain, mainly before 10am. High near 46. West northwest wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 46 °F

    Rain then
    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 10pm. Patchy frost after 2am. Otherwise, mostly clear, with a low around 34. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.

    Low: 34 °F

    Slight Chance
    Rain then
    Patchy Frost

  • Friday

    Friday: A 30 percent chance of rain, mainly between 10am and 4pm. Areas of frost before 7am. Otherwise, mostly sunny, with a high near 48. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Chance Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

  • Saturday

    Saturday: Rain likely, mainly after 10am. Mostly cloudy, with a high near 51.

    High: 51 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Rain. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Rain

Detailed Forecast

Tonight
A chance of rain and snow before 2am, then a chance of rain and snow after 3am. Partly cloudy, with a low around 34. West northwest wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Wednesday
A chance of rain and snow before 3pm, then a chance of rain between 3pm and 4pm. Partly sunny, with a high near 47. Calm wind becoming west southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday Night
Rain, mainly after 9pm. Steady temperature around 43. South southwest wind 5 to 7 mph becoming southeast in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain, mainly before 10am. High near 46. West northwest wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A 20 percent chance of rain before 10pm. Patchy frost after 2am. Otherwise, mostly clear, with a low around 34. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.
Friday
A 30 percent chance of rain, mainly between 10am and 4pm. Areas of frost before 7am. Otherwise, mostly sunny, with a high near 48. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 40 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 39.
Saturday
Rain likely, mainly after 10am. Mostly cloudy, with a high near 51.
Saturday Night
Rain. Mostly cloudy, with a low around 47.
Sunday
Rain. Cloudy, with a high near 56.
Sunday Night
Rain. Cloudy, with a low around 53.
Monday
Rain. Cloudy, with a high near 55.
Monday Night
Rain. Cloudy, with a low around 51.
Tuesday
Rain. Cloudy, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSW Saint Helena CA
 38.43°N 122.52°W (Elev. 1093 ft)
Last Update:
2:05 pm PST Feb 17, 2026
Forecast Valid:
6pm PST Feb 17, 2026-6pm PST Feb 24, 2026
 
Forecast Discussion
 
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Additional Resources

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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