Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. 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.

Rain

52°F

11°C

Humidity	87%
Wind Speed	ENE 11 MPH
Barometer	29.91 in (1012.87 mb)
Dewpoint	48°F (9°C)
Visibility	9.00 mi
Last update	31 Dec 11:35 PM PST

More Information:

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

Extended Forecast for

3 Miles NNW Vallejo CA

Coastal Flood Advisory December 31, 11:53pm until January 4, 02:00pm

Click here for hazard details and duration

Coastal Flood Advisory

Coastal Flood Advisory December 31, 11:53pm until January 4, 02:00pm
NOW until 2:00pm Sun
Coastal Flood Advisory
Tonight
Low: 47 °F
Rain
New Year's Day
High: 56 °F
Rain
Thursday Night
Low: 49 °F
Rain Likely
then Slight
Chance Rain
Friday
High: 55 °F
Chance Rain
then Rain
Friday Night
Low: 54 °F
Rain
Saturday
High: 56 °F
Showers
Saturday Night
Low: 51 °F
Showers
Sunday
High: 53 °F
Rain

Detailed Forecast

Tonight

Rain. Low around 47. East wind around 18 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. High near 56. East wind 8 to 11 mph becoming south in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Rain likely, mainly before 9pm. Cloudy, with a low around 49. Southeast wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Friday

Rain, mainly after 4pm. High near 55. South southeast wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

Rain. Low around 54. South southeast wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

Saturday

Rain before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then rain after 1pm. High near 56. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night

Showers and possibly a thunderstorm before 4am, then rain and possibly a thunderstorm after 4am. Low around 51. Chance of precipitation is 90%.

Sunday

Rain. Cloudy, with a high near 53.

Sunday Night

Rain. Mostly cloudy, with a low around 48.

Monday

Rain likely. Cloudy, with a high near 52.

Monday Night

Rain likely. Cloudy, with a low around 46.

Tuesday

A chance of rain. Partly sunny, with a high near 52.