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

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

57°F

14°C

Humidity 67%
Wind Speed W 3 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 13 Apr 10:30 AM PDT
Extended Forecast for

4 Miles NW Yountville CA

  • Today

    Today: Sunny, with a high near 67. Calm wind becoming west around 5 mph in the afternoon.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 41. Light west wind.

    Low: 41 °F

    Clear then
    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 9am.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 69. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 69 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 3am.  Otherwise, mostly clear, with a low around 41. West southwest wind around 5 mph becoming calm  in the evening.

    Low: 41 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Areas of fog before 8am.  Otherwise, mostly sunny, with a high near 69. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 69 °F

    Areas Fog
    then 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 70.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 45.

    Low: 45 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 67. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 41. Light west wind.
Tuesday
Areas of fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 69. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 41. West southwest wind around 5 mph becoming calm in the evening.
Wednesday
Areas of fog before 8am. Otherwise, mostly sunny, with a high near 69. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 70.
Thursday Night
Clear, with a low around 45.
Friday
Sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
A chance of showers. Partly sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Yountville CA
 38.43°N 122.41°W (Elev. 180 ft)
8:52 am PDT Apr 13, 2026
10am PDT Apr 13, 2026-6pm PDT Apr 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

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