Hurricane Lowell to Impact Kauai; Heat Continues in the South-Central U.S.

Hurricane Lowell is forecast to pass west of Kauai today. Impacts such as high surf and heavy rain could impact all of the islands. A Hurricane Warning is in effect for Kauai, Niihau and the surrounding coastal waters. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest this week with limited nighttime relief. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

81°F

27°C

Humidity 39%
Wind Speed SW 5 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 08 Sep 11:54 AM PDT
Extended Forecast for

Napa CA

Heat Advisory September 9, 10:00am until September 10, 10:00pm
Coastal Flood Advisory September 8, 08:00pm until September 10, 01:00am
Click here for hazard details and duration
Heat Advisory
Coastal Flood Advisory
  • This Afternoon

    This Afternoon: Sunny, with a high near 87. South southwest wind 3 to 5 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 96. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 69. West wind around 6 mph becoming calm  in the evening.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 88. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 87. South southwest wind 3 to 5 mph.
Tonight
Partly cloudy, with a low around 67. Calm wind.
Wednesday
Mostly sunny and hot, with a high near 96. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 69. West wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 88. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 79.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Napa CA
 38.29°N 122.29°W (Elev. 20 ft)
11:26 am PDT Sep 8, 2026
12pm PDT Sep 8, 2026-6pm PDT Sep 14, 2026
 
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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