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

Gusty winds and low relative humidity will bring critical fire weather to the central/southern High Plains and portions of the Midwest. Two Pacific storms will continue to bring heavy mountain snow and gusty winds to the western U.S. through Thursday. A swath of wintry weather, including heavy snow and a wintry mix, is expected from the Northern Plains to New England. 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.

Clear

34°F

1°C

Humidity	93%
Wind Speed	N 0 MPH
Barometer	29.91 in (1012.87 mb)
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Last update	18 Feb 06:20 AM PST

More Information:

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

Extended Forecast for

2 Miles SE Lake Berryessa CA

Cold Weather Advisory until February 18, 09:00am

Click here for hazard details and duration

...

Cold Weather Advisory until February 18, 09:00am
NOW until 9:00am Wed
Cold Weather Advisory
Today
High: 49 °F
Chance Rain
and Patchy
Fog
Tonight
Low: 38 °F
Rain Likely
then Rain
Thursday
High: 48 °F
Rain/Snow and
Patchy Fog
then Chance
Rain
Thursday Night
Low: 32 °F
Mostly Clear
then Frost
Friday
High: 48 °F
Frost then
Partly Sunny
Friday Night
Low: 37 °F
Mostly Cloudy
then Slight
Chance Rain
Saturday
High: 51 °F
Chance Rain
and Patchy
Fog then Rain
Likely
Saturday Night
Low: 47 °F
Rain Likely

Detailed Forecast

Today

A 40 percent chance of rain between noon and 4pm. Patchy fog between 9am and 10am. Areas of frost before 8am. Otherwise, partly sunny, with a high near 49. North northwest wind 5 to 8 mph becoming calm.

Tonight

Rain, mainly after 11pm. Low around 38. Southwest wind 6 to 13 mph becoming southeast after midnight. Winds could gust as high as 20 mph. 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 rain. Patchy fog before 7am. High near 48. West northwest wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night

Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 32. West wind 5 to 8 mph becoming calm after midnight.

Friday

Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 48. Calm wind.

Friday Night

A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 37.

Saturday

Rain likely, mainly after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 51. Chance of precipitation is 60%.

Saturday Night

Rain likely. Mostly cloudy, with a low around 47.

Sunday

Rain. Cloudy, with a high near 57.