Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Partly Cloudy

46°F

8°C

Humidity	100%
Wind Speed	SSE 4 MPH
Barometer	29.75 in (1007.45 mb)
Dewpoint	46°F (8°C)
Visibility	10.00 mi
Wind Chill	44°F (7°C)
Last update	11 Apr 08:20 PM PDT

More Information:

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

Extended Forecast for

2 Miles SSW Lake Berryessa CA

Tonight
Low: 45 °F
Showers
Likely
Sunday
High: 53 °F
Showers
Sunday Night
Low: 43 °F
Chance
Showers then
Partly Cloudy
Monday
High: 60 °F
Mostly Sunny
Monday Night
Low: 45 °F
Mostly Clear
Tuesday
High: 63 °F
Sunny
Tuesday Night
Low: 45 °F
Mostly Clear
Wednesday
High: 64 °F
Mostly Sunny
Wednesday Night
Low: 48 °F
Partly Cloudy

Detailed Forecast

Tonight

Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 45. South wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday

Showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 53. Southwest wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 43. West southwest wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.

Monday

Mostly sunny, with a high near 60. Calm wind becoming west northwest around 5 mph in the afternoon.

Monday Night

Mostly clear, with a low around 45. West wind around 6 mph.

Tuesday

Sunny, with a high near 63.

Tuesday Night

Mostly clear, with a low around 45.

Wednesday

Mostly sunny, with a high near 64.

Wednesday Night

Partly cloudy, with a low around 48.