Critical Fire Weather in the Southern High Plains; Heavy Snow in the Great Lakes and Northeast U.S.

Gusty winds and low relative humidity will bring critical fire weather to the southern High Plains Friday. A winter storm will track across the Great Lakes and Northeast U.S. Friday into Saturday with areas of wintry mix and heavy snow from northern New York through southern Maine. Read More >

Hazardous Weather Conditions

Extreme Cold Warning in effect from February 20, 01:00 AM PST until February 20, 09:00 AM PST

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

44°F

7°C

Humidity	70%
Wind Speed	WNW 4 MPH
Barometer	29.87 in (1011.51 mb)
Dewpoint	35°F (2°C)
Visibility	10.00 mi
Wind Chill	42°F (6°C)
Last update	19 Feb 07:54 PM PST

More Information:

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

Extended Forecast for

5 Miles W Napa Co. Airport CA

Extreme Cold Warning February 20, 01:00am until February 20, 09:00am

Click here for hazard details and duration

Extreme Cold Warning

Tonight
Low: 32 °F
Clear then
Frost
Friday
High: 51 °F
Frost and
Patchy Fog
then Partly
Sunny
Friday Night
Low: 36 °F
Increasing
Clouds
Saturday
High: 56 °F
Slight Chance
Rain
Saturday Night
Low: 46 °F
Rain Likely
Sunday
High: 60 °F
Rain Likely
Sunday Night
Low: 50 °F
Chance Rain
Monday
High: 62 °F
Rain Likely
Monday Night
Low: 52 °F
Rain

Detailed Forecast

Tonight

Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 32. West northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 18 mph.

Friday

Patchy fog before 8am. Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 51. Calm wind becoming east southeast around 6 mph in the afternoon.

Friday Night

Increasing clouds, with a low around 36. Calm wind.

Saturday

A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 56. Southeast wind 5 to 11 mph, with gusts as high as 18 mph.

Saturday Night

Rain likely, mainly after 4am. Mostly cloudy, with a low around 46. Southeast wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Sunday

Rain likely, mainly before 10am. Mostly cloudy, with a high near 60. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night

A 50 percent chance of rain. Cloudy, with a low around 50.

Monday

Rain likely, mainly after 4pm. Mostly cloudy, with a high near 62.

Monday Night

Rain. Cloudy, with a low around 52.

Tuesday

Rain. Cloudy, with a high near 59.

Tuesday Night

Rain likely. Cloudy, with a low around 48.

Wednesday

Rain likely. Mostly cloudy, with a high near 61.