Critical Fire Weather in the High Plains; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central and southern High Plains Wednesday. Two Pacific storms will continue impacting the mountains of the western U.S. into Thursday with gusty winds and heavy snow. Heavy snow and gusty winds will continue to impact the northern Plains into the central Great Lakes Wednesday. Read More >

Hazardous Weather Conditions

Cold Weather Advisory in effect from February 18, 12:00 AM PST until February 18, 09:00 AM PST

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mostly Cloudy

46°F

8°C

Humidity	87%
Wind Speed	SW 14 MPH
Barometer	29.66 in (1004.4 mb)
Dewpoint	43°F (6°C)
Visibility	10.00 mi
Wind Chill	40°F (4°C)
Last update	17 Feb 05:35 PM PST

More Information:

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

Extended Forecast for

7 Miles SSE Lake Berryessa CA

Cold Weather Advisory February 18, 12:00am until February 18, 09:00am

Click here for hazard details and duration

Cold Weather Advisory

This Afternoon
High: 46 °F
Chance Rain
Tonight
Low: 32 °F
Chance
Rain/Snow
then Slight
Chance Snow
and Patchy
Fog
Wednesday
High: 48 °F
Chance
Rain/Snow
Wednesday Night
Low: 37 °F
Rain
Thursday
High: 46 °F
Rain/Snow
then Chance
Rain/Snow
Thursday Night
Low: 29 °F
Slight Chance
Rain/Snow
then Frost
Friday
High: 48 °F
Slight Chance
Rain/Snow
Friday Night
Low: 34 °F
Chance Rain
Saturday
High: 50 °F
Chance Rain

Detailed Forecast

This Afternoon

A 40 percent chance of rain. Mostly cloudy, with a high near 46. West southwest wind around 10 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.

Tonight

A chance of rain and snow before 4am, then a slight chance of snow between 4am and 5am. Patchy fog after 5am. Widespread frost before 4am, then widespread frost after 5am. Otherwise, partly cloudy, with a low around 32. West wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Wednesday

A chance of rain and snow before 1pm, then a chance of rain between 1pm and 5pm. Partly sunny, with a high near 48. West southwest wind 3 to 8 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Wednesday Night

Rain, mainly after 9pm. Low around 37. Southwest wind 7 to 10 mph becoming south southeast after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday

Rain and snow before 10am, then a chance of snow between 10am and 1pm, then a chance of rain and snow after 1pm. High near 46. West southwest wind 7 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night

A slight chance of rain and snow before 10pm. Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 29. Chance of precipitation is 20%.

Friday

A slight chance of rain and snow before 1pm, then a slight chance of rain between 1pm and 4pm. Widespread frost, mainly before 9am. Otherwise, mostly sunny, with a high near 48. Chance of precipitation is 20%.

Friday Night

A chance of rain, mainly between 10pm and 4am. Mostly cloudy, with a low around 34.

Saturday

A chance of rain, mainly after 10am. Partly sunny, with a high near 50.

Saturday Night

Rain likely, mainly after 10pm. Mostly cloudy, with a low around 43.

Sunday

Rain. Cloudy, with a high near 54.

Sunday Night

Rain. Cloudy, with a low around 48.

Monday

Rain. Cloudy, with a high near 56.