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

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mist

38°F

3°C

Humidity	100%
Wind Speed	E 12 MPH
Barometer	30.21 in (1023.03 mb)
Dewpoint	38°F (3°C)
Visibility	1.50 mi
Wind Chill	30°F (-1°C)
Last update	30 Dec 05:01 AM PST

More Information:

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

Extended Forecast for

2 Miles NW Napa Co. Airport CA

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

Cold Weather Advisory until December 30, 09:00am

Dense Fog Advisory December 30, 05:26am until December 30, 10:00am

Click here for hazard details and duration

Coastal Flood Advisory

Cold Weather Advisory

Dense Fog Advisory

Cold Weather Advisory until December 30, 09:00am
Dense Fog Advisory December 30, 05:26am until December 30, 10:00am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 36 °F
Patchy Dense
Fog
Tuesday
High: 53 °F
Patchy Dense
Fog then
Mostly Cloudy
Tuesday Night
Low: 43 °F
Cloudy
Wednesday
High: 51 °F
Chance Rain
and Patchy
Fog
Wednesday Night
Low: 48 °F
Rain and
Patchy Fog
New Year's Day
High: 54 °F
Rain and
Patchy Fog
Thursday Night
Low: 52 °F
Showers and
Areas Fog
Friday
High: 56 °F
Showers and
Patchy Fog

Detailed Forecast

Overnight

Patchy dense fog. Otherwise, mostly clear, with a low around 36. East wind around 7 mph.

Tuesday

Patchy dense fog before 10am. Otherwise, increasing clouds, with a high near 53. East wind 5 to 14 mph.

Tuesday Night

Cloudy, with a low around 43. East northeast wind 5 to 8 mph becoming calm after midnight.

Wednesday

A 50 percent chance of rain after 10am. Patchy fog after 2pm. Otherwise, cloudy, with a high near 51. East northeast wind 3 to 8 mph. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Patchy fog before 1am. Low around 48. East wind 5 to 11 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. Patchy fog after 7am. High near 54. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Rain before 4am, then showers likely and possibly a thunderstorm after 4am. Areas of fog. Low around 52. Chance of precipitation is 80%.

Friday

Showers likely and possibly a thunderstorm, then rain after 10am. Patchy fog before 10am. Otherwise, cloudy, with a high near 56.

Friday Night

Rain. Patchy fog after 1am. Otherwise, cloudy, with a low around 46.

Saturday

Rain likely. Areas of fog before 1pm, then patchy fog after 4pm. Otherwise, mostly cloudy, with a high near 52.

Saturday Night

Rain likely. Widespread fog. Otherwise, mostly cloudy, with a low around 43.