National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.

Mostly Cloudy

57°F

14°C

Humidity 67%
Wind Speed WSW 10 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 12 Apr 02:30 PM PDT
Extended Forecast for

7 Miles SSE Lake Berryessa CA

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 55. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 55 °F

    Showers
    Likely

  • Tonight

    Tonight: A 20 percent chance of showers before 11pm. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 40. West southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 40 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Monday

    Monday: Areas of fog before 10am. Otherwise, sunny, with a high near 62. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 62 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 41. West wind around 5 mph becoming calm in the evening.

    Low: 41 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 64. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 64 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 55. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 20 percent chance of showers before 11pm. 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 10am. Otherwise, sunny, with a high near 62. Calm wind becoming north northwest around 5 mph in the afternoon.
Monday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 41. West wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 64. Calm wind becoming south southwest around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Mostly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 65.
Thursday Night
Clear, with a low around 46.
Friday
Sunny, with a high near 71.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 73.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSE Lake Berryessa CA
 38.48°N 122.22°W (Elev. 1798 ft)
Last Update:
1:26 pm PDT Apr 12, 2026
Forecast Valid:
2pm PDT Apr 12, 2026-6pm PDT Apr 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation