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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.

Overcast

54°F

12°C

Humidity 81%
Wind Speed N 0 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 12 Apr 08:55 PM PDT
Extended Forecast for

Napa CA

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 39. Light and variable wind.

    Low: 39 °F

    Patchy Fog

  • Monday

    Monday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 65. Calm wind becoming west around 6 mph in the afternoon.

    High: 65 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Patchy fog after midnight. Otherwise, mostly clear, with a low around 40. West southwest wind around 5 mph becoming calm in the evening.

    Low: 40 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. 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 5am. Otherwise, mostly clear, with a low around 42. West southwest wind 5 to 8 mph becoming calm in the evening.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 68.

    High: 68 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 45.

    Low: 45 °F

    Clear

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 39. Light and variable wind.
Monday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 65. Calm wind becoming west around 6 mph in the afternoon.
Monday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 40. West southwest wind around 5 mph becoming calm in the evening.
Tuesday
Areas of fog before 10am. Otherwise, sunny, with a high near 66. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 42. West southwest wind 5 to 8 mph becoming calm in the evening.
Wednesday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 68.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 68.
Thursday Night
Clear, with a low around 45.
Friday
Sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 43.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 46.
Sunday
A slight chance of rain. Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Napa CA
 38.29°N 122.29°W (Elev. 20 ft)
Last Update:
6:36 pm PDT Apr 12, 2026
Forecast Valid:
9pm PDT Apr 12, 2026-6pm PDT Apr 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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Chance of Precipitation