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.

Mostly Cloudy

61°F

16°C

Humidity 63%
Wind Speed WSW 9 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 13 Apr 12:00 PM PDT
Extended Forecast for

3 Miles SW Napa CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 65. West wind 3 to 7 mph.

    High: 65 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 3am.  Otherwise, mostly clear, with a low around 40. West wind around 6 mph becoming calm  in the evening.

    Low: 40 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 10am.  Otherwise, sunny, with a high near 66. Calm wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 66 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41. West southwest wind 5 to 9 mph becoming calm  in the evening.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67. Light west wind increasing to 6 to 11 mph in the afternoon.

    High: 67 °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 68.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 65. West wind 3 to 7 mph.
Tonight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 40. West wind around 6 mph becoming calm in the evening.
Tuesday
Patchy fog before 10am. Otherwise, sunny, with a high near 66. Calm wind becoming west southwest 5 to 9 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 41. West southwest wind 5 to 9 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 67. Light west wind increasing to 6 to 11 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 68.
Thursday Night
Clear, with a low around 44.
Friday
Sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
A chance of showers. Partly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Napa CA
 38.26°N 122.34°W (Elev. 157 ft)
11:51 am PDT Apr 13, 2026
12pm PDT Apr 13, 2026-6pm PDT Apr 19, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database