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Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mostly Cloudy

63°F

17°C

Humidity 77%
Wind Speed SSW 14 MPH
Barometer 29.83 in (1010.16 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 10 Apr 04:20 PM PDT
Extended Forecast for

2 Miles NW Napa Co. Airport CA

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 65. South southwest wind around 9 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Chance
    T-storms

  • Tonight

    Tonight: Rain and thunderstorms likely before 10pm, then a chance of rain. Mostly cloudy, with a low around 51. South southwest wind 3 to 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Rain Likely
    then Chance
    Rain

  • Saturday

    Saturday: A chance of rain and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 60. South wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Chance Rain
    then Showers

  • Saturday Night

    Saturday Night: Rain and possibly a thunderstorm before 11pm, then showers and possibly a thunderstorm between 11pm and 5am, then rain after 5am. Low around 46. South wind 6 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 46 °F

    Showers

  • Sunday

    Sunday: Rain before 8am, then showers and possibly a thunderstorm after 8am. High near 58. South southwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of rain before 11pm. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 42. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance Rain
    then Patchy
    Fog

  • Monday

    Monday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 64.

    High: 64 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 67.

    High: 67 °F

    Patchy Fog
    then Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 65. South southwest wind around 9 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Rain and thunderstorms likely before 10pm, then a chance of rain. Mostly cloudy, with a low around 51. South southwest wind 3 to 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of rain and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 60. South wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Rain and possibly a thunderstorm before 11pm, then showers and possibly a thunderstorm between 11pm and 5am, then rain after 5am. Low around 46. South wind 6 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Rain before 8am, then showers and possibly a thunderstorm after 8am. High near 58. South southwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of rain before 11pm. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 42. New precipitation amounts of less than a tenth of an inch possible.
Monday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 64.
Monday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 41.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Mostly sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 44.
Friday
Sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Napa Co. Airport CA
 38.22°N 122.3°W (Elev. 3 ft)
Last Update:
2:57 pm PDT Apr 10, 2026
Forecast Valid:
4pm PDT Apr 10, 2026-6pm PDT Apr 17, 2026
 
Forecast Discussion
 
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Additional Resources

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