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

Sinlaku Continues to Impact the Marianas; Severe Weather for the Central Plains and Northeast; Record Warmth for mid-Atlantic to Southeast

Sinlaku continues to affect the Marianas as it moves north through Friday. Meanwhile, severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley today and for the Central/Southern Plains on Friday. Considerable flooding impacts are ongoing in the Upper Great Lakes, and expected to continue through the weekend. Fire weather concerns persist in the Plains. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Fog

41°F

5°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 41°F (5°C)
Visibility 0.25 mi
Last update 16 Apr 06:35 AM PDT
Extended Forecast for

Napa CA

  • Today

    Today: Sunny, with a high near 70. Light north wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 47. North wind 7 to 9 mph, with gusts as high as 22 mph.

    Low: 47 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 74. North northwest wind around 6 mph.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. West southwest wind around 5 mph becoming calm in the evening.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 75. Light and variable wind.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: A 20 percent chance of rain after 11am. Patchy fog before 8am. Otherwise, partly sunny, with a high near 69.

    High: 69 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Sunday Night

    Sunday Night: A chance of rain. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain

  • Monday

    Monday: A chance of rain. Mostly cloudy, with a high near 64.

    High: 64 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 70. Light north wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Tonight
Clear, with a low around 47. North wind 7 to 9 mph, with gusts as high as 22 mph.
Friday
Sunny, with a high near 74. North northwest wind around 6 mph.
Friday Night
Partly cloudy, with a low around 43. West southwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 75. Light and variable wind.
Saturday Night
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 46.
Sunday
A 20 percent chance of rain after 11am. Patchy fog before 8am. Otherwise, partly sunny, with a high near 69.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 48.
Monday
A chance of rain. Mostly cloudy, with a high near 64.
Monday Night
A chance of rain. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 47.
Tuesday
A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 64.
Tuesday Night
A slight chance of rain. Patchy fog. Otherwise, partly cloudy, with a low around 44.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Napa CA
 38.29°N 122.29°W (Elev. 20 ft)
Last Update:
1:46 am PDT Apr 16, 2026
Forecast Valid:
6am PDT Apr 16, 2026-6pm PDT Apr 22, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation