Cold Temperatures for the Eastern U.S.; Lake Effect Snow in the Great Lakes; Heavy Rain in the Pacific Northwest

Cold temperatures will continue across much of the eastern U.S. into today. Heavy lake effect snow continues into today east of Lakes Erie and Ontario. Two Pacific cold fronts will cross the Pacific Northwest early this week followed by another atmospheric river. Heavy rain and gusty winds are expected through midweek, with the potential for renewed urban and river flooding. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Clear

50°F

10°C

Humidity 81%
Wind Speed SE 3 MPH
Barometer 30.22 in (1023.37 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 15 Dec 03:35 PM PST
Extended Forecast for

6 Miles SW Saint Helena CA

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 55. North northwest wind 3 to 6 mph.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Rain likely, mainly after 4pm.  Patchy dense fog between 9am and 10am.  Otherwise, mostly cloudy, with a steady temperature around 55. Calm wind becoming west around 5 mph in the afternoon.  Chance of precipitation is 60%.

    High: 55 °F

    Chance Rain
    and Patchy
    Dense Fog
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain.  Low around 55. West southwest wind 5 to 8 mph, with gusts as high as 18 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 55 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 10am.  Partly sunny, with a high near 59. West wind around 7 mph.  Chance of precipitation is 60%.

    High: 59 °F

    Rain Likely
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after 10pm.  Mostly cloudy, with a low around 49. Northwest wind around 5 mph becoming light and variable  in the evening.

    Low: 49 °F

    Chance Rain

  • Thursday

    Thursday: A 40 percent chance of rain.  Mostly cloudy, with a high near 56. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly after 4am.  Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

    Low: 52 °F

    Rain Likely

  • Friday

    Friday: Rain.  Mostly cloudy, with a high near 58.

    High: 58 °F

    Rain

  • Friday Night

    Friday Night: Rain, mainly before 4am.  Mostly cloudy, with a low around 50.

    Low: 50 °F

    Rain

Detailed Forecast

Tonight
Partly cloudy, with a steady temperature around 55. North northwest wind 3 to 6 mph.
Tuesday
Rain likely, mainly after 4pm. Patchy dense fog between 9am and 10am. Otherwise, mostly cloudy, with a steady temperature around 55. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 60%.
Tuesday Night
Rain. Low around 55. West southwest wind 5 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain likely, mainly before 10am. Partly sunny, with a high near 59. West wind around 7 mph. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 49. Northwest wind around 5 mph becoming light and variable in the evening.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 56. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely, mainly after 4am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Friday
Rain. Mostly cloudy, with a high near 58.
Friday Night
Rain, mainly before 4am. Mostly cloudy, with a low around 50.
Saturday
Rain likely, mainly between 10am and 4pm. Mostly cloudy, with a high near 53.
Saturday Night
Rain likely. Mostly cloudy, with a low around 47.
Sunday
Rain likely. Mostly cloudy, with a high near 54.
Sunday Night
Rain likely. Mostly cloudy, with a low around 48.
Monday
Rain likely. Mostly cloudy, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SW Saint Helena CA
 38.45°N 122.56°W (Elev. 1594 ft)
12:27 pm PST Dec 15, 2025
3pm PST Dec 15, 2025-6pm PST Dec 22, 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