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Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

70°F

21°C

Humidity 64%
Wind Speed SSW 11 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 16 Jun 01:00 PM PDT
Extended Forecast for

2 Miles SE Napa Co. Airport CA

Coastal Flood Advisory June 16, 01:25pm until June 18, 05:00am
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory June 16, 01:25pm until June 18, 05:00am

    NOW until 5:00am Thu

    Coastal Flood Advisory

  • This Afternoon

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 55. West southwest wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 72. Southwest wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 72 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 55. West southwest wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 70. Southwest wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

This Afternoon
Sunny, with a high near 75. Southwest wind 9 to 11 mph.
Tonight
Increasing clouds, with a low around 55. West southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 72. Southwest wind 6 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Increasing clouds, with a low around 55. West southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 70. Southwest wind 8 to 14 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 55.
Juneteenth
Mostly sunny, with a high near 70.
Friday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 54.
Saturday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 53.
Monday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Napa Co. Airport CA
 38.18°N 122.26°W (Elev. 56 ft)
Last Update:
1:17 pm PDT Jun 16, 2026
Forecast Valid:
1pm PDT Jun 16, 2026-6pm PDT Jun 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation