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.

Clear

37°F

3°C

Humidity	92%
Wind Speed	W 6 MPH
Barometer	29.85 in (1010.84 mb)
Dewpoint	35°F (2°C)
Visibility	10.00 mi
Wind Chill	32°F (0°C)
Last update	18 Feb 02:54 AM PST

More Information:

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

Extended Forecast for

Napa CA

Cold Weather Advisory until February 18, 09:00am

Click here for hazard details and duration

Cold Weather Advisory

Cold Weather Advisory until February 18, 09:00am
NOW until 9:00am Wed
Cold Weather Advisory
Overnight
Low: 33 °F
Areas Frost
and Patchy
Fog
Wednesday
High: 50 °F
Chance Rain
and Areas Fog
Wednesday Night
Low: 40 °F
Rain and
Patchy Fog
Thursday
High: 50 °F
Rain and
Areas Fog
then Chance
Rain
Thursday Night
Low: 29 °F
Mostly Clear
then Frost
and Fog
Friday
High: 49 °F
Frost and Fog
then Partly
Sunny
Friday Night
Low: 35 °F
Patchy Fog
then Slight
Chance Rain
and Areas Fog
Saturday
High: 53 °F
Rain Likely
and Patchy
Fog

Detailed Forecast

Overnight

Patchy fog. Areas of frost. Otherwise, partly cloudy, with a low around 33. Calm wind.

Wednesday

A 40 percent chance of rain between noon and 4pm. Areas of fog before 10am. Areas of frost before 7am. 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.

Wednesday Night

Rain, mainly after 11pm. Patchy fog before midnight, then patchy fog after 3am. Low around 40. Light and variable wind becoming east southeast 12 to 17 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday

Rain, mainly before 10am. Areas of fog before 10am. High near 50. West northwest wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Widespread fog, mainly after 5am. Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 29. West northwest wind around 6 mph becoming calm in the evening.

Friday

Widespread fog, mainly before 7am. Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 49.

Friday Night

A 10 percent chance of rain after 4am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 35.

Saturday

Rain likely, mainly after 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 53.

Saturday Night

Rain likely. Mostly cloudy, with a low around 44.

Sunday

Rain. Cloudy, with a high near 58.

Sunday Night

Rain. Cloudy, with a low around 50.