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.

Mostly Cloudy

60°F

16°C

Humidity	74%
Wind Speed	S 14 MPH
Barometer	29.82 in (1009.82 mb)
Dewpoint	52°F (11°C)
Visibility	10.00 mi
Last update	11 Apr 01:54 PM PDT

More Information:

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

Extended Forecast for

6 Miles SE Lake Berryessa CA

This Afternoon
High: 59 °F
Heavy Rain
Tonight
Low: 43 °F
Heavy Rain
Sunday
High: 57 °F
Showers
Sunday Night
Low: 40 °F
Chance
Showers then
Patchy Fog
Monday
High: 64 °F
Areas Fog
then Mostly
Sunny
Monday Night
Low: 41 °F
Mostly Clear
then Patchy
Fog
Tuesday
High: 68 °F
Areas Fog
then Sunny
Tuesday Night
Low: 42 °F
Mostly Clear
then Patchy
Fog
Wednesday
High: 69 °F
Patchy Fog
then Mostly
Sunny

Detailed Forecast

This Afternoon

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. High near 59. South southwest wind around 14 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and midnight, then showers likely and possibly a thunderstorm after midnight. Some of the storms could produce heavy rainfall. Low around 43. South wind 5 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. 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 57. South southeast wind 6 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

A 30 percent chance of showers before 11pm. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 40. West southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.

Monday

Areas of fog before 9am. Otherwise, mostly sunny, with a high near 64. Light and variable wind.

Monday Night

Patchy fog after 3am. Otherwise, mostly clear, with a low around 41.

Tuesday

Areas of fog before 9am. Otherwise, sunny, with a high near 68.

Tuesday Night

Patchy fog after 4am. Otherwise, mostly clear, with a low around 42.

Wednesday

Patchy fog before 8am. Otherwise, sunny, with a high near 69.

Wednesday Night

Mostly clear, with a low around 45.