Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Hazardous Weather Conditions

Coastal Flood Advisory in effect from December 31, 05:00 AM PST until January 4, 02:00 PM PST

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

44°F

7°C

Humidity	85%
Wind Speed	E 19 MPH
Barometer	30.22 in (1023.37 mb)
Dewpoint	40°F (4°C)
Visibility	10.00 mi
Wind Chill	36°F (2°C)
Last update	30 Dec 11:54 AM PST

More Information:

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

Extended Forecast for

5 Miles W Napa Co. Airport CA

Coastal Flood Advisory December 31, 05:00am until January 4, 02:00pm

Click here for hazard details and duration

Coastal Flood Advisory

This Afternoon
High: 49 °F
Mostly Cloudy
Tonight
Low: 44 °F
Cloudy then
Slight Chance
Rain
Wednesday
High: 50 °F
Rain Likely
Wednesday Night
Low: 48 °F
Rain
New Year's Day
High: 55 °F
Rain
Thursday Night
Low: 53 °F
Rain
Friday
High: 56 °F
Rain
Friday Night
Low: 48 °F
Rain
Saturday
High: 54 °F
Rain

Detailed Forecast

This Afternoon

Mostly cloudy, with a high near 49. East wind around 11 mph.

Tonight

A 10 percent chance of rain after 4am. Cloudy, with a low around 44. East northeast wind around 6 mph becoming calm in the evening.

Wednesday

Rain likely, mainly after 10am. Cloudy, with a high near 50. Light southeast wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Low around 48. East northeast wind around 6 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. High near 55. East wind around 7 mph becoming south in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Rain. Low around 53. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday

Rain. High near 56. Chance of precipitation is 80%.

Friday Night

Rain. Cloudy, with a low around 48.

Saturday

Rain. Mostly cloudy, with a high near 54.

Saturday Night

Rain likely. Cloudy, with a low around 46.

Sunday

Rain likely. Mostly cloudy, with a high near 53.