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Heavy rain, mountain snow and strong winds in the western U.S. this week

The western U.S. will experience active weather yet again this week as significant Pacific moisture brings rain and mountain snow to the region. This heavy rain will bring flood concerns to parts of WA, OR and CA. Very heavy snow is possible in the Sierra, Cascades, Great Basin and parts of the northern Rockies. Read More >

Current conditions at

DW9961 Petaluma (D9961)

Lat: 38.27467°NLon: 122.66383°WElev: 43ft.

NA

47°F

8°C

Humidity 85%
Wind Speed NA
Barometer 30.11 in
Dewpoint 43°F (6°C)
Visibility NA
Last update 17 Jan 5:15 pm PST
Extended Forecast for

4 Miles SSW Saint Helena CA

Wind Advisory January 18, 11:00am until January 18, 10:00pm
Click here for hazard details and duration
Wind Advisory
  • Today

    Today: Rain, with thunderstorms also possible after 4pm. Some of the storms could produce heavy rainfall.  High near 48. South wind 18 to 21 mph, with gusts as high as 26 mph.  Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Heavy Rain

    High: 48 °F

  • Tonight

    Tonight: Rain and possibly a thunderstorm before 10pm, then rain likely. Some of the storms could produce heavy rainfall.  Low around 44. Breezy, with a south wind 15 to 23 mph becoming west southwest in the evening. Winds could gust as high as 30 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Heavy Rain
    and Breezy
    then Heavy
    Rain

    Low: 44 °F

  • Thursday

    Thursday: Scattered showers.  Mostly cloudy, with a high near 48. West wind 6 to 11 mph.  Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Scattered
    Showers

    High: 48 °F

  • Thursday
    Night

    Thursday Night: A chance of showers before 10pm, then rain after 10pm. The rain could be heavy at times.  Low around 43. Southwest wind 8 to 13 mph.  Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Heavy Rain

    Low: 43 °F

  • Friday

    Friday: Rain. The rain could be heavy at times.  High near 47. South southeast wind 16 to 21 mph becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 26 mph.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Heavy Rain

    High: 47 °F

  • Friday
    Night

    Friday Night: A 50 percent chance of showers.  Cloudy, with a low around 41. Breezy.  New precipitation amounts of less than a tenth of an inch possible.

    Chance
    Showers and
    Breezy

    Low: 41 °F

  • Saturday

    Saturday: A 30 percent chance of showers.  Mostly cloudy, with a high near 48.

    Chance
    Showers

    High: 48 °F

  • Saturday
    Night

    Saturday Night: Showers likely.  Mostly cloudy, with a low around 42. Breezy.

    Showers
    Likely and
    Breezy

    Low: 42 °F

  • Sunday

    Sunday: Rain.  Cloudy, with a high near 49. Breezy.

    Rain and
    Breezy

    High: 49 °F

Detailed Forecast

Today
Rain, with thunderstorms also possible after 4pm. Some of the storms could produce heavy rainfall. High near 48. South wind 18 to 21 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Tonight
Rain and possibly a thunderstorm before 10pm, then rain likely. Some of the storms could produce heavy rainfall. Low around 44. Breezy, with a south wind 15 to 23 mph becoming west southwest in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Thursday
Scattered showers. Mostly cloudy, with a high near 48. West wind 6 to 11 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers before 10pm, then rain after 10pm. The rain could be heavy at times. Low around 43. Southwest wind 8 to 13 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Friday
Rain. The rain could be heavy at times. High near 47. South southeast wind 16 to 21 mph becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday Night
A 50 percent chance of showers. Cloudy, with a low around 41. Breezy. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 30 percent chance of showers. Mostly cloudy, with a high near 48.
Saturday Night
Showers likely. Mostly cloudy, with a low around 42. Breezy.
Sunday
Rain. Cloudy, with a high near 49. Breezy.
Sunday Night
Showers likely. Cloudy, with a low around 39.
Monday
A chance of showers. Cloudy, with a high near 47.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 50.
Click Map For Forecast
Point Forecast:
4 Miles SSW Saint Helena CA
 38.44°N 122.5°W (Elev. 1398 ft)
6:44 am PST Jan 18, 2017
9am PST Jan 18, 2017-6pm PST Jan 24, 2017
 
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