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

52°F

11°C

Humidity	81%
Wind Speed	SW 12 MPH
Barometer	29.75 in (1007.45 mb)
Dewpoint	46°F (8°C)
Visibility	10.00 mi
Last update	12 Apr 02:00 AM PDT

More Information:

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

Extended Forecast for

7 Miles SSE Lake Berryessa CA

Overnight
Low: 43 °F
Showers
Sunday
High: 55 °F
Showers
Sunday Night
Low: 40 °F
Slight Chance
Showers then
Patchy Fog
Monday
High: 62 °F
Areas Fog
then Mostly
Sunny
Monday Night
Low: 41 °F
Mostly Clear
then Patchy
Fog
Tuesday
High: 65 °F
Patchy Fog
then Sunny
Tuesday Night
Low: 42 °F
Mostly Clear
Wednesday
High: 65 °F
Mostly Sunny
Wednesday Night
Low: 45 °F
Partly Cloudy

Detailed Forecast

Overnight

Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Low around 43. South southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday

Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 55. Southwest wind 9 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A 20 percent chance of showers before 7pm. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 40. West southwest wind 5 to 7 mph becoming calm in the evening.

Monday

Areas of fog before 9am. Otherwise, mostly sunny, with a high near 62. Calm wind.

Monday Night

Patchy fog after 5am. Otherwise, mostly clear, with a low around 41. West wind around 5 mph becoming calm in the evening.

Tuesday

Patchy fog before 8am. Otherwise, sunny, with a high near 65.

Tuesday Night

Mostly clear, with a low around 42.

Wednesday

Mostly sunny, with a high near 65.

Wednesday Night

Partly cloudy, with a low around 45.