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

50°F

10°C

Humidity	87%
Wind Speed	N 0 MPH
Barometer	29.78 in (1008.47 mb)
Dewpoint	46°F (8°C)
Visibility	10.00 mi
Last update	12 Apr 04:20 AM PDT

More Information:

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

Extended Forecast for

4 Miles NNW Napa CA

Overnight
Low: 46 °F
Showers
Likely
Sunday
High: 59 °F
Showers
Sunday Night
Low: 40 °F
Slight Chance
Showers and
Areas Fog
then Areas
Fog
Monday
High: 66 °F
Areas Fog
then Mostly
Sunny
Monday Night
Low: 40 °F
Mostly Clear
then Patchy
Fog
Tuesday
High: 68 °F
Areas Fog
then Sunny
Tuesday Night
Low: 41 °F
Mostly Clear
then Patchy
Fog
Wednesday
High: 68 °F
Areas Fog
then Mostly
Sunny
Wednesday Night
Low: 44 °F
Partly Cloudy

Detailed Forecast

Overnight

Showers likely and possibly a thunderstorm before 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a steady temperature around 46. South southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth 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 59. Southwest wind 6 to 10 mph, with gusts as high as 18 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 20 percent chance of showers before 7pm. Areas of fog after 11pm. Otherwise, partly cloudy, with a low around 40. West southwest wind around 6 mph becoming calm in the evening.

Monday

Areas of fog before 9am. Otherwise, mostly sunny, with a high near 66. Light west wind.

Monday Night

Patchy fog after midnight. Otherwise, mostly clear, with a low around 40. West wind around 6 mph becoming calm in the evening.

Tuesday

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

Tuesday Night

Patchy fog after 2am. Otherwise, mostly clear, with a low around 41.

Wednesday

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

Wednesday Night

Partly cloudy, with a low around 44.