Winter Storm Impacting The Western U.S.

A winter storm continues to pound the Western U.S. today with heavy mountain snow, locally heavy rainfall and gusty winds. The heaviest snowfall is expected from the Sierra to parts of the Intermountain West. The heaviest rainfall with localized flooding is likely along the central California coastline. Windy conditions span from the West into the central High Plains. Read More >

Hazardous Weather Conditions

Freeze Warning in effect from December 1, 11:00 PM PST until December 2, 09:00 AM PST

En Español

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33ft.

light rain,mist

48°F

9°C

Humidity	87%
Wind Speed	WSW 5 MPH
Barometer	29.86 in (1011.18 mb)
Dewpoint	45°F (7°C)
Visibility	5.00 mi
Wind Chill	46°F (8°C)
Last update	01 Dec 09:55 AM PST

More Information:

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

Extended Forecast for

4 Miles WSW Lake Berryessa CA

Freeze Warning December 1, 11:00pm until December 2, 09:00am

Click here for hazard details and duration

Freeze Warning

Today

Chance Rain
High: 42 °F
Tonight

Frost
Low: 31 °F
Friday

Frost then
Sunny
High: 44 °F
Friday
Night

Areas Frost
then Chance
Rain/Snow
Low: 33 °F
Saturday

Rain/Snow
Likely then
Rain Likely
High: 42 °F
Saturday
Night

Rain
Low: 40 °F
Sunday

Rain
High: 45 °F
Sunday
Night

Rain Likely
Low: 41 °F
Monday

Chance Rain
High: 46 °F

Detailed Forecast

Today

A 40 percent chance of rain. Cloudy early, then gradual clearing, with a steady temperature around 42. West wind 14 to 17 mph, with gusts as high as 22 mph. New precipitation amounts of less than a tenth of an inch possible.

Tonight

Widespread frost, mainly after 1am. Otherwise, mostly clear, with a low around 31. West wind 6 to 9 mph.

Friday

Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 44. Northeast wind around 7 mph.

Friday Night

A chance of rain and snow after 4am. Areas of frost before 10pm. Otherwise, partly cloudy, with a low around 33. North northeast wind around 6 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Saturday

A chance of rain and snow before 7am, then rain likely. Mostly cloudy, with a high near 42. East wind 6 to 8 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Saturday Night

Rain. Low around 40. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Sunday

Rain. High near 45. Chance of precipitation is 90%.

Sunday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 41.

Monday

A chance of rain, mainly before 4pm. Partly sunny, with a high near 46.

Monday Night

A slight chance of rain before 10pm. Partly cloudy, with a low around 38.

Tuesday

Sunny, with a high near 48.