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

32°F

0°C

Humidity	100%
Wind Speed	NE 3 MPH
Barometer	29.94 in (1013.89 mb)
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Last update	18 Feb 07:20 AM PST

More Information:

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

Extended Forecast for

3 Miles NNW Vallejo 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: 50 °F
Chance Rain
and Patchy
Fog
Tonight
Low: 40 °F
Rain Likely
then Rain and
Patchy Fog
Thursday
High: 48 °F
Rain and
Patchy Fog
then Chance
Rain and
Breezy
Thursday Night
Low: 32 °F
Mostly Clear
then Frost
and Patchy
Fog
Friday
High: 48 °F
Frost and
Patchy Fog
then Mostly
Sunny
Friday Night
Low: 37 °F
Mostly Cloudy
then Slight
Chance Rain
Saturday
High: 52 °F
Chance Rain
Saturday Night
Low: 46 °F
Rain Likely

Detailed Forecast

Today

A 40 percent chance of rain, mainly between 8am and 4pm. Patchy fog between 8am and 9am. Otherwise, partly sunny, with a high near 50. Light and variable wind becoming west southwest 6 to 11 mph in the morning. New precipitation amounts of less than a tenth of an inch possible.

Tonight

Rain, mainly after 11pm. Patchy fog after 5am. Low around 40. Light and variable wind becoming east 6 to 11 mph in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday

Rain, mainly before 10am. Patchy fog before 8am. High near 48. Breezy, with a west northwest wind 7 to 12 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Patchy fog after 4am. Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 32. West northwest wind 6 to 14 mph, with gusts as high as 22 mph.

Friday

Patchy fog before 8am. Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 48. East wind 3 to 7 mph.

Friday Night

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

Saturday

A 30 percent chance of rain, mainly after 10am. Mostly cloudy, with a high near 52.

Saturday Night

Rain likely, mainly after 10pm. Mostly cloudy, with a low around 46.

Sunday

Rain. Cloudy, with a high near 57. Breezy.

Sunday Night

Rain. Cloudy, with a low around 51.