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Hot Weather in the West; Heavy Rainfall and Flooding in the Southwest

Hot to extremely hot temperatures are in place much of this week across parts of California and the interior Northwest U.S, with the Pacific Northwest carrying the potential for record-breaking high temperatures. Monsoonal moisture over the Southwest U.S. may lead to heavy rainfall and instances of flash flooding through Wednesday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

72°F

22°C

Humidity 68%
Wind Speed S 21 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 02 Sep 04:35 PM PDT
Extended Forecast for

3 Miles NNW Napa Co. Airport CA

  • Tonight

    Tonight: Increasing clouds, with a low around 56. South wind 6 to 11 mph becoming light south southwest after midnight.

    Low: 56 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 81. South southwest wind 5 to 10 mph.

    High: 81 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog between 3am and 5am. Otherwise, increasing clouds, with a low around 56. South southwest wind 5 to 9 mph.

    Low: 56 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 8am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81. Light south southwest wind becoming west southwest 6 to 11 mph in the morning.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. Southwest wind 6 to 13 mph.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 76.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 77.

    High: 77 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog between 3am and 5am. Otherwise, mostly clear, with a low around 57.

    Low: 57 °F

    Clear then
    Patchy Fog

Detailed Forecast

Tonight
Increasing clouds, with a low around 56. South wind 6 to 11 mph becoming light south southwest after midnight.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 81. South southwest wind 5 to 10 mph.
Wednesday Night
Patchy fog between 3am and 5am. Otherwise, increasing clouds, with a low around 56. South southwest wind 5 to 9 mph.
Thursday
Patchy fog before 8am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81. Light south southwest wind becoming west southwest 6 to 11 mph in the morning.
Thursday Night
Partly cloudy, with a low around 56. Southwest wind 6 to 13 mph.
Friday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 56.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 77.
Saturday Night
Patchy fog between 3am and 5am. Otherwise, mostly clear, with a low around 57.
Sunday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 78.
Sunday Night
Patchy fog. Otherwise, mostly clear, with a low around 55.
Monday
Areas of fog. Otherwise, mostly sunny, with a high near 77.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 56.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Napa Co. Airport CA
 38.24°N 122.3°W (Elev. 26 ft)
Last Update:
1:26 pm PDT Sep 2, 2025
Forecast Valid:
4pm PDT Sep 2, 2025-6pm PDT Sep 9, 2025
 
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Additional Resources

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National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation