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.

Overcast

55°F

13°C

Humidity	93%
Wind Speed	N 0 MPH
Barometer	29.87 in (1011.51 mb)
Dewpoint	54°F (12°C)
Visibility	10.00 mi
Last update	11 Apr 01:35 AM PDT

More Information:

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

Extended Forecast for

6 Miles SE Lake Berryessa CA

Overnight
Low: 52 °F
Chance Rain
Saturday
High: 59 °F
Showers
Saturday Night
Low: 44 °F
Showers
Sunday
High: 58 °F
Showers
Sunday Night
Low: 40 °F
Chance Rain
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: 40 °F
Clear then
Patchy Fog

Detailed Forecast

Overnight

A 30 percent chance of rain, mainly before 3am. Mostly cloudy, with a steady temperature around 52. Light south wind. New precipitation amounts of less than a tenth of an inch possible.

Saturday

A chance of rain, then showers and possibly a thunderstorm after 11am. High near 59. South wind 6 to 16 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.

Saturday Night

Rain and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Low around 44. South wind 5 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Sunday

Showers and possibly a thunderstorm. High near 58. South southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

A 40 percent chance of rain before 11pm. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 40. West southwest wind 5 to 8 mph becoming calm in the evening. 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.

Monday Night

Patchy fog after 4am. Otherwise, mostly clear, with a low around 41.

Tuesday

Areas of fog before 8am. Otherwise, sunny, with a high near 68.

Tuesday Night

Patchy fog after 5am. Otherwise, mostly clear, with a low around 40.

Wednesday

Patchy fog before 7am. Otherwise, mostly sunny, with a high near 69.

Wednesday Night

Mostly clear, with a low around 43.