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

52°F

11°C

Humidity	87%
Wind Speed	S 9 MPH
Barometer	29.86 in (1011.18 mb)
Dewpoint	48°F (9°C)
Visibility	10.00 mi
Last update	26 Dec 06:20 AM PST

More Information:

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

Extended Forecast for

4 Miles NW Yountville CA

Flood Watch December 26, 06:44am until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 26, 06:44am until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
Today
High: 52 °F
Showers
Likely
Tonight
Low: 40 °F
Chance
Showers and
Patchy Fog
Saturday
High: 52 °F
Patchy Fog
then Sunny
Saturday Night
Low: 36 °F
Increasing
Clouds
Sunday
High: 53 °F
Patchy Frost
then Sunny
Sunday Night
Low: 36 °F
Mostly Clear
then Patchy
Frost
Monday
High: 55 °F
Areas Frost
then Sunny
Monday Night
Low: 36 °F
Mostly Clear
then Patchy
Frost

Detailed Forecast

Today

Showers likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 52. South wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

A 40 percent chance of showers, mainly before 10pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 40. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

Saturday

Patchy fog before 10am. Otherwise, mostly sunny, with a high near 52. Light north wind.

Saturday Night

Increasing clouds, with a low around 36. Calm wind.

Sunday

Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 53. Light north wind.

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 55.

Monday Night

Patchy frost after 5am. Otherwise, mostly clear, with a low around 36.