National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hot Temperatures in the West; Heavy Rainfall and Flooding Potential in the Southwest

Hot to extremely hot temperatures are in place across coastal southern California again today and the interior Northwest U.S into Thursday, with the Pacific Northwest carrying the potential for record-breaking high temperatures. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring heavy rainfall and the potential for flooding through the week. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mist

54°F

12°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 54°F (12°C)
Visibility 1.50 mi
Last update 03 Sep 05:54 AM PDT
Extended Forecast for

2 Miles SE Napa Co. Airport CA

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 78. Southwest wind 6 to 11 mph.

    High: 78 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 57. Southwest wind around 8 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy through mid morning, then gradual clearing, with a high near 75. Southwest wind 7 to 11 mph.

    High: 75 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 58. West southwest wind 9 to 13 mph, with gusts as high as 18 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly sunny, with a high near 74. West southwest wind 9 to 13 mph.

    High: 74 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 78. Southwest wind 6 to 11 mph.
Tonight
Increasing clouds, with a low around 57. Southwest wind around 8 mph.
Thursday
Mostly cloudy through mid morning, then gradual clearing, with a high near 75. Southwest wind 7 to 11 mph.
Thursday Night
Increasing clouds, with a low around 58. West southwest wind 9 to 13 mph, with gusts as high as 18 mph.
Friday
Mostly sunny, with a high near 74. West southwest wind 9 to 13 mph.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 58.
Monday
Mostly sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Napa Co. Airport CA
 38.18°N 122.26°W (Elev. 56 ft)
Last Update:
1:26 am PDT Sep 3, 2025
Forecast Valid:
6am PDT Sep 3, 2025-6pm PDT Sep 9, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation