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.

Clear

49°F

9°C

Humidity	89%
Wind Speed	SW 4 MPH
Barometer	29.77 in (1008.13 mb)
Dewpoint	46°F (8°C)
Visibility	10.00 mi
Wind Chill	48°F (9°C)
Last update	12 Apr 03:54 AM PDT

More Information:

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

Extended Forecast for

Napa CA

Overnight
Low: 47 °F
Showers
Likely
Sunday
High: 59 °F
Showers
Sunday Night
Low: 40 °F
Slight Chance
Showers and
Patchy Fog
then Areas
Fog
Monday
High: 65 °F
Areas Fog
then Mostly
Sunny
Monday Night
Low: 40 °F
Mostly Clear
then Patchy
Fog
Tuesday
High: 67 °F
Areas Fog
then Sunny
Tuesday Night
Low: 42 °F
Mostly Clear
then Patchy
Fog
Wednesday
High: 68 °F
Patchy 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 47. 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. South wind 6 to 11 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. Patchy 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 10am. Otherwise, mostly sunny, with a high near 65. Light and variable wind.

Monday Night

Patchy fog after 2am. 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 67.

Tuesday Night

Patchy fog after 5am. Otherwise, mostly clear, with a low around 42.

Wednesday

Patchy fog before 8am. Otherwise, mostly sunny, with a high near 68.

Wednesday Night

Partly cloudy, with a low around 44.