Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Coastal Flood Advisory until January 4, 02:00 PM PST

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.

Mist

51°F

11°C

Humidity	89%
Wind Speed	E 8 MPH
Barometer	29.87 in (1011.51 mb)
Dewpoint	48°F (9°C)
Visibility	6.00 mi
Last update	01 Jan 08:54 AM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Sonoma CA

Coastal Flood Advisory January 1, 09:03am until January 4, 02:00pm

Click here for hazard details and duration

Coastal Flood Advisory

Coastal Flood Advisory January 1, 09:03am until January 4, 02:00pm
NOW until 2:00pm Sun
Coastal Flood Advisory
New Year's Day
High: 55 °F
Showers
Tonight
Low: 49 °F
Showers then
Chance
Showers
Friday
High: 55 °F
Showers
Likely
Friday Night
Low: 51 °F
Showers
Saturday
High: 55 °F
Showers
Saturday Night
Low: 49 °F
Showers
Sunday
High: 53 °F
Showers
Sunday Night
Low: 45 °F
Showers

Detailed Forecast

New Year's Day

Showers. High near 55. South southeast wind 5 to 11 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.

Tonight

Showers, mainly before 10pm. Low around 49. East southeast wind 5 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday

Showers likely, mainly after 10am. Cloudy, with a high near 55. South southeast wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

Showers, with thunderstorms also possible after 4am. Low around 51. South wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday

Showers and possibly a thunderstorm. High near 55. South wind 7 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night

Showers and possibly a thunderstorm. Low around 49. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday

Showers before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then showers after 4pm. High near 53. Chance of precipitation is 90%.

Sunday Night

Showers, with thunderstorms also possible after 10pm. Cloudy, with a low around 45.

Monday

Showers. Mostly cloudy, with a high near 52.

Monday Night

Showers likely, mainly before 10pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 42.

Tuesday

A chance of showers. Patchy fog. Otherwise, partly sunny, with a high near 53.

Tuesday Night

A slight chance of showers. Patchy fog. Otherwise, mostly cloudy, with a low around 38.

Wednesday

A slight chance of showers. Patchy fog. Otherwise, partly sunny, with a high near 52.