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

50°F

10°C

Humidity	57%
Wind Speed	W 23 MPH
Barometer	29.81 in (1009.48 mb)
Dewpoint	35°F (2°C)
Visibility	10.00 mi
Wind Chill	43°F (6°C)
Last update	19 Feb 05:35 PM PST

More Information:

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

Extended Forecast for

2 Miles SSW Lake Berryessa 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: 46 °F
Frost then
Partly Sunny
Friday Night
Low: 36 °F
Partly Cloudy
Saturday
High: 50 °F
Slight Chance
Rain
Saturday Night
Low: 46 °F
Chance Rain
Sunday
High: 55 °F
Rain Likely
Sunday Night
Low: 52 °F
Rain Likely
Monday
High: 58 °F
Chance Rain
Monday Night
Low: 54 °F
Rain

Detailed Forecast

Tonight

Areas of frost before 1am, then widespread frost after 2am. Otherwise, clear, with a low around 32. West northwest wind 6 to 11 mph becoming light northwest after midnight. Winds could gust as high as 20 mph.

Friday

Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 46. East southeast wind 3 to 6 mph.

Friday Night

Partly cloudy, with a low around 36. East southeast wind 3 to 5 mph.

Saturday

A 20 percent chance of rain after 10am. Partly sunny, with a high near 50. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.

Saturday Night

A 50 percent chance of rain. Mostly cloudy, with a low around 46. South southeast wind around 11 mph, with gusts as high as 23 mph. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday

Rain likely. Mostly cloudy, with a high near 55. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

Monday

A chance of rain. Mostly cloudy, with a high near 58.

Monday Night

Rain. Cloudy, with a low around 54.

Tuesday

Rain. Cloudy, with a high near 56.

Tuesday Night

Rain likely. Mostly cloudy, with a low around 51.

Wednesday

Rain likely. Mostly cloudy, with a high near 58.