Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Flood Watch until December 26, 10:00 PM PST

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

57°F

14°C

Humidity	67%
Wind Speed	S 18 MPH
Barometer	29.92 in (1013.21 mb)
Dewpoint	46°F (8°C)
Visibility	10.00 mi
Last update	26 Dec 11:00 AM PST

More Information:

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

Extended Forecast for

4 Miles NNW Napa CA

Flood Watch December 26, 11:21am until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 26, 11:21am until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
Today
High: 52 °F
Showers
Likely
Tonight
Low: 41 °F
Chance
Showers and
Patchy Fog
Saturday
High: 51 °F
Patchy Fog
then Mostly
Sunny
Saturday Night
Low: 35 °F
Increasing
Clouds
Sunday
High: 52 °F
Patchy Frost
then Sunny
Sunday Night
Low: 36 °F
Mostly Clear
then Patchy
Frost
Monday
High: 54 °F
Areas Frost
then Sunny
Monday Night
Low: 34 °F
Mostly Clear
then Patchy
Frost and
Patchy Fog

Detailed Forecast

Today

Showers likely and possibly a thunderstorm before 3pm, then a chance of showers and thunderstorms, mainly between 3pm and 5pm. Mostly cloudy, with a high near 52. South southwest wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

A 30 percent chance of showers, mainly before 10pm. Patchy fog after midnight. Otherwise, partly cloudy, with a low around 41. Light and variable wind. New precipitation amounts of less than a tenth of an inch possible.

Saturday

Patchy fog before 9am. Otherwise, mostly sunny, with a high near 51. Calm wind becoming north around 5 mph in the afternoon.

Saturday Night

Increasing clouds, with a low around 35. Calm wind.

Sunday

Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 52. Calm wind becoming north northeast around 5 mph in the morning.

Sunday Night

Patchy frost after 4am. Otherwise, mostly clear, with a low around 36.

Monday

Areas of frost before 8am. Otherwise, sunny, with a high near 54.

Monday Night

Patchy fog after 4am. Patchy frost after 4am. Otherwise, mostly clear, with a low around 34.