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

48°F

9°C

Humidity	96%
Wind Speed	N 0 MPH
Barometer	29.74 in (1007.11 mb)
Dewpoint	47°F (8°C)
Visibility	10.00 mi
Last update	11 Apr 07:54 PM PDT

More Information:

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

Extended Forecast for

5 Miles SSE Sonoma CA

Tonight
Low: 45 °F
Showers
Likely
Sunday
High: 59 °F
Showers
Sunday Night
Low: 40 °F
Chance
Showers then
Patchy Fog
Monday
High: 65 °F
Areas Fog
then Mostly
Sunny
Monday Night
Low: 40 °F
Mostly Clear
then Patchy
Fog
Tuesday
High: 67 °F
Patchy Fog
then Sunny
Tuesday Night
Low: 41 °F
Mostly Clear
Wednesday
High: 68 °F
Sunny
Wednesday Night
Low: 44 °F
Partly Cloudy

Detailed Forecast

Tonight

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 11pm. Mostly cloudy, with a low around 45. South southwest wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Sunday

Showers and thunderstorms, mainly before 1pm. High near 59. West southwest wind 7 to 11 mph, with gusts as high as 20 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. Patchy fog after midnight. Otherwise, partly cloudy, with a low around 40. West wind 5 to 10 mph becoming light west northwest in the evening. Winds could gust as high as 18 mph.

Monday

Areas of fog before 10am. Otherwise, mostly sunny, with a high near 65. Calm wind becoming west around 6 mph in the afternoon.

Monday Night

Patchy fog after 5am. Otherwise, mostly clear, with a low around 40. West wind 5 to 9 mph becoming calm after midnight.

Tuesday

Patchy fog before 10am. Otherwise, sunny, with a high near 67.

Tuesday Night

Mostly clear, with a low around 41.

Wednesday

Sunny, with a high near 68.

Wednesday Night

Partly cloudy, with a low around 44.