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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

48°F

9°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 48°F (9°C)
Visibility 7.00 mi
Last update 13 Apr 03:00 AM PDT
Extended Forecast for

7 Miles SSE Lake Berryessa CA

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, sunny, with a high near 62. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 62 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 3am. 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: Areas of fog before 9am. Otherwise, sunny, with a high near 64. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 64 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42. Southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 65.

    High: 65 °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 64.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 39. Calm wind.
Monday
Patchy fog before 9am. Otherwise, sunny, with a high near 62. Calm wind becoming north northwest around 5 mph in the afternoon.
Monday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 41. West wind around 5 mph becoming calm in the evening.
Tuesday
Areas of 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. Southwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 64.
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
Mostly sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
A slight chance of rain. Mostly sunny, with a high near 67.
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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 am PDT Apr 13, 2026
Forecast Valid:
3am PDT Apr 13, 2026-6pm PDT Apr 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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