Extremely Critical Fire Weather in the Central Plains; Active Pattern in the West

Gusty to high winds and low relative humidity will bring critical to extremely critical fire weather conditions to the central and southern Plains today into Wednesday. Use caution with any potential ignition sources. Two Pacific storms will impact the western U.S. into Wednesday with gusty winds, low elevation rain and heavy mountain snow. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Rain

50°F

10°C

Humidity	81%
Wind Speed	SW 19 MPH
Barometer	29.67 in (1004.74 mb)
Dewpoint	45°F (7°C)
Visibility	10.00 mi
Wind Chill	44°F (7°C)
Last update	17 Feb 02:20 PM PST

More Information:

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

Extended Forecast for

Sonoma CA

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

Coastal Flood Advisory February 17, 02:31pm until February 17, 03:00pm

Click here for hazard details and duration

Cold Weather Advisory

Coastal Flood Advisory

Coastal Flood Advisory February 17, 02:31pm until February 17, 03:00pm
NOW until 3:00pm Tue
Coastal Flood Advisory
This Afternoon
High: 49 °F
Showers
Tonight
Low: 32 °F
Chance Rain
and Areas Fog
Wednesday
High: 51 °F
Chance Rain
and Patchy
Fog
Wednesday Night
Low: 36 °F
Rain
Thursday
High: 49 °F
Rain then
Chance Rain
and Breezy
Thursday Night
Low: 28 °F
Slight Chance
Rain then
Frost
Friday
High: 51 °F
Slight Chance
Rain
Friday Night
Low: 33 °F
Chance Rain
and Patchy
Fog

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm before 4pm, then rain likely and possibly a thunderstorm between 4pm and 5pm, then a chance of rain and thunderstorms after 5pm. High near 49. West southwest wind 11 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A chance of rain before 2am, then a slight chance of rain after 3am. Areas of fog after 2am. Patchy frost between 2am and 3am. Otherwise, mostly cloudy, with a low around 32. Northwest wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday

A 30 percent chance of rain between noon and 4pm. Patchy fog before 10am. Otherwise, partly sunny, with a high near 51. Calm wind becoming west 5 to 8 mph in the afternoon. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain, mainly after 9pm. Low around 36. Northwest wind 5 to 7 mph becoming south southeast 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. High near 49. Breezy, with a northwest wind 7 to 12 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

A 20 percent chance of rain before 10pm. Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 28.

Friday

A 20 percent chance of rain after 10am. Widespread frost, mainly before 8am. Otherwise, partly sunny, with a high near 51.

Friday Night

A chance of rain, mainly between 10pm and 4am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 33.

Saturday

Rain likely, mainly after 4pm. Mostly cloudy, with a high near 52.

Saturday Night

Rain. Mostly cloudy, with a low around 43.

Sunday

Rain. Cloudy, with a high near 56.