Showers and Storms in the East; Dangerously Hot and Dry in the West

Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

75°F

24°C

Humidity 57%
Wind Speed SSW 11 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 07 Aug 03:15 PM PDT
Extended Forecast for

6 Miles E Saint Helena CA

Coastal Flood Advisory August 7, 05:00pm until August 13, 02:00am
Click here for hazard details and duration
  • Tonight

    Tonight: Mostly clear, with a low around 55. South southwest wind around 5 mph becoming calm  in the evening.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 95. Calm wind becoming south around 6 mph in the afternoon.

    High: 95 °F

    Becoming
    Sunny

  • Saturday Night

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

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 98. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 98 °F

    Hot

  • Sunday Night

    Sunday Night: Patchy fog after 3am.  Otherwise, mostly clear, with a low around 55. Southwest wind around 6 mph becoming calm  in the evening.

    Low: 55 °F

    Clear then
    Patchy Fog

  • Monday

    Monday: Areas of fog before 9am.  Otherwise, sunny, with a high near 90.

    High: 90 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Areas of fog after 2am.  Otherwise, mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear
    then Areas
    Fog

  • Tuesday

    Tuesday: Areas of fog before 9am.  Otherwise, sunny, with a high near 89.

    High: 89 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 1am.  Otherwise, mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Tonight
Mostly clear, with a low around 55. South southwest wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 95. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 58. Calm wind.
Sunday
Sunny and hot, with a high near 98. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 55. Southwest wind around 6 mph becoming calm in the evening.
Monday
Areas of fog before 9am. Otherwise, sunny, with a high near 90.
Monday Night
Areas of fog after 2am. Otherwise, mostly clear, with a low around 52.
Tuesday
Areas of fog before 9am. Otherwise, sunny, with a high near 89.
Tuesday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 52.
Wednesday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 89.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 53.
Thursday
Areas of fog. Otherwise, mostly sunny, with a high near 83.
Thursday Night
Patchy fog. Otherwise, mostly clear, with a low around 52.
Friday
Patchy fog. Otherwise, mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles E Saint Helena CA
 38.48°N 122.36°W (Elev. 499 ft)
1:37 pm PDT Aug 7, 2026
3pm PDT Aug 7, 2026-6pm PDT Aug 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