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

33°F

1°C

Humidity	100%
Wind Speed	N 4 MPH
Barometer	29.88 in (1011.85 mb)
Dewpoint	33°F (1°C)
Visibility	10.00 mi
Wind Chill	29°F (-2°C)
Last update	18 Feb 04:54 AM PST

More Information:

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

Extended Forecast for

4 Miles NW Yountville 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: 32 °F
Areas Frost
and Patchy
Fog
Wednesday
High: 51 °F
Chance Rain
and Patchy
Fog
Wednesday Night
Low: 38 °F
Rain and Fog
Thursday
High: 50 °F
Rain and
Patchy Fog
then Chance
Rain
Thursday Night
Low: 29 °F
Patchy Frost
then Frost
and Patchy
Fog
Friday
High: 51 °F
Frost and
Patchy Fog
then Partly
Sunny
Friday Night
Low: 35 °F
Slight Chance
Rain and
Patchy 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 32. Calm wind.

Wednesday

A 40 percent chance of rain between 11am and 4pm. Patchy fog before 9am. Areas of frost before 7am. Otherwise, partly sunny, with a high near 51. Calm wind becoming west southwest 5 to 9 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night

Rain, mainly after 8pm. Patchy fog before midnight, then widespread fog after 3am. Low around 38. Calm wind becoming south southeast 5 to 9 mph. 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 10am. High near 50. Light west northwest wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Patchy fog 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

Patchy fog before 7am. Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 51.

Friday Night

A 20 percent chance of rain after 10pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 35.

Saturday

Rain likely, mainly after 4pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 53.

Saturday Night

Rain. Mostly cloudy, with a low around 45.

Sunday

Rain. Cloudy, with a high near 58.

Sunday Night

Rain. Cloudy, with a low around 50.