Severe Thunderstorms and Heavy Rain from the Plains to the Mid-Atlantic; Ongoing Heat in the South

Severe thunderstorms and showers pose a risk for excessive rain, localized flash flooding, strong gusts and/or large hail across portions of the northern and central Plains, the Lower Missouri to Lower Ohio Valleys, and across the Mid-Atlantic this afternoon and evening. Extreme heat is ongoing over the Desert Southwest and the Southeast U.S.. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

64°F

18°C

Humidity 72%
Wind Speed SW 5 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 09 Jul 11:32 AM PDT
Extended Forecast for

4 Miles E Saint Helena CA

Coastal Flood Advisory July 9, 04:00pm until July 16, 04:00am
Click here for hazard details and duration
Coastal Flood Advisory
  • Today

    Today: Sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 5am.  Otherwise, increasing clouds, with a low around 54. Light and variable wind.

    Low: 54 °F

    Clear then
    Patchy Fog

  • Friday

    Friday: Patchy fog before 7am.  Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.

    High: 88 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 53. South southwest wind around 5 mph becoming calm  in the evening.

    Low: 53 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 93 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 92.

    High: 92 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 94.

    High: 94 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon.
Tonight
Patchy fog after 5am. Otherwise, increasing clouds, with a low around 54. Light and variable wind.
Friday
Patchy fog before 7am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
Increasing clouds, with a low around 53. South southwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 60.
Sunday
Mostly cloudy, with a high near 92.
Sunday Night
Mostly cloudy, with a low around 62.
Monday
Partly sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny and hot, with a high near 96.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny and hot, with a high near 96.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Saint Helena CA
 38.5°N 122.4°W (Elev. 476 ft)
11:41 am PDT Jul 9, 2026
11am PDT Jul 9, 2026-6pm PDT Jul 15, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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