Coastal and Marine Impacts from Imelda and Humberto as Both Track Away from the Southeast U.S.

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine and rip current conditions to the east coast of Florida and Georgia today, spreading north along much of the east coast of the U.S. this week. Heavy rainfall north and west of Imelda falling across coastal Florida and Georgia into the Carolinas could cause isolated flash and urban flooding through Tuesday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Partly Cloudy

68°F

20°C

Humidity 70%
Wind Speed SSW 13 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 29 Sep 04:54 PM PDT
Extended Forecast for

4 Miles NNW Napa CA

  • This Afternoon

    This Afternoon: A 50 percent chance of rain.  Mostly cloudy, with a high near 70. South southwest wind around 7 mph.

    High: 70 °F

    Chance Rain

  • Tonight

    Tonight: A 50 percent chance of rain.  Patchy fog after 1am.  Otherwise, mostly cloudy, with a low around 58. Light south southwest wind.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Chance Rain
    and Patchy
    Fog

  • Tuesday

    Tuesday: A 20 percent chance of rain.  Patchy fog before 8am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 71. Calm wind becoming south southwest 5 to 9 mph in the morning.

    High: 71 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain, mainly after 11pm.  Patchy fog after 5am.  Otherwise, increasing clouds, with a low around 57. Calm wind.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Chance Rain
    and Patchy
    Fog

  • Wednesday

    Wednesday: Rain likely, mainly before 11am.  Patchy fog before 8am.  Otherwise, cloudy, with a high near 66. Calm wind becoming south around 6 mph in the afternoon.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 66 °F

    Rain Likely
    and Patchy
    Fog

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before 11pm.  Patchy fog after 8pm.  Otherwise, mostly cloudy, with a low around 54. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance Rain
    and Patchy
    Fog then
    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 11am.  Otherwise, partly sunny, with a high near 74.

    High: 74 °F

    Areas Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Patchy fog before 8am.  Otherwise, sunny, with a high near 80.

    High: 80 °F

    Patchy Fog
    then Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of rain. Mostly cloudy, with a high near 70. South southwest wind around 7 mph.
Tonight
A 50 percent chance of rain. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 58. Light south southwest wind. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A 20 percent chance of rain. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 71. Calm wind becoming south southwest 5 to 9 mph in the morning.
Tuesday Night
A 50 percent chance of rain, mainly after 11pm. Patchy fog after 5am. Otherwise, increasing clouds, with a low around 57. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely, mainly before 11am. Patchy fog before 8am. Otherwise, cloudy, with a high near 66. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 30 percent chance of rain before 11pm. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 54. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 51.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 51.
Monday
Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Napa CA
 38.35°N 122.33°W (Elev. 105 ft)
1:26 pm PDT Sep 29, 2025
5pm PDT Sep 29, 2025-6pm PDT Oct 6, 2025
 
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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