Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Southern Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over the Northern Mariana Islands. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes through Tuesday. Heavy snow is expected in the Pacific Northwest. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

53°F

12°C

Humidity 82%
Wind Speed W 3 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 13 Apr 08:54 PM PDT
Extended Forecast for

3 Miles SSE Lake Berryessa CA

  • Tonight

    Tonight: Patchy fog after 4am.  Otherwise, mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Areas of fog before 9am.  Otherwise, sunny, with a high near 66. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 66 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 4am.  Otherwise, partly cloudy, with a low around 42. Southwest wind around 6 mph becoming calm  in the evening.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 7am.  Otherwise, mostly sunny, with a high near 68. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 68 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44. West southwest wind 5 to 10 mph becoming light west  after midnight. Winds could gust as high as 21 mph.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Friday Night

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

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 41. Calm wind.
Tuesday
Areas of fog before 9am. Otherwise, sunny, with a high near 66. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 42. Southwest wind around 6 mph becoming calm in the evening.
Wednesday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 68. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 44. West southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 21 mph.
Thursday
Sunny, with a high near 66.
Thursday Night
Clear, with a low around 46.
Friday
Sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
A chance of showers. Partly sunny, with a high near 66.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 44.
Monday
A slight chance of showers. Mostly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Lake Berryessa CA
 38.53°N 122.23°W (Elev. 991 ft)
1:26 pm PDT Apr 13, 2026
9pm PDT Apr 13, 2026-6pm PDT Apr 20, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database