Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Partly Cloudy

68°F

20°C

Humidity 64%
Wind Speed SSW 14 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 14 Aug 01:00 PM PDT
Extended Forecast for

4 Miles E Saint Helena CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 74. South wind around 6 mph.

    High: 74 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 9pm.  Otherwise, increasing clouds, with a low around 50. Light and variable wind.

    Low: 50 °F

    Patchy Fog

  • Saturday

    Saturday: Areas of fog before 11am.  Otherwise, cloudy through mid morning, then gradual clearing, with a high near 81. Calm wind becoming south around 5 mph in the afternoon.

    High: 81 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 9pm.  Otherwise, increasing clouds, with a low around 49. Calm wind.

    Low: 49 °F

    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 84. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 84 °F

    Areas Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 10pm.  Otherwise, mostly cloudy, with a low around 50.

    Low: 50 °F

    Patchy Fog

  • Monday

    Monday: Areas of fog before 11am.  Otherwise, mostly sunny, with a high near 80.

    High: 80 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 10pm.  Otherwise, mostly cloudy, with a low around 50.

    Low: 50 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 10am.  Otherwise, partly sunny, with a high near 85.

    High: 85 °F

    Areas Fog
    then Mostly
    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 74. South wind around 6 mph.
Tonight
Patchy fog after 9pm. Otherwise, increasing clouds, with a low around 50. Light and variable wind.
Saturday
Areas of fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 81. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Patchy fog after 9pm. Otherwise, increasing clouds, with a low around 49. Calm wind.
Sunday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming south southwest around 5 mph in the afternoon.
Sunday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 50.
Monday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 80.
Monday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 50.
Tuesday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 85.
Tuesday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 52.
Wednesday
Areas of fog. Otherwise, mostly sunny, with a high near 86.
Wednesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 53.
Thursday
Areas of fog. Otherwise, partly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Saint Helena CA
 38.5°N 122.4°W (Elev. 476 ft)
1:12 pm PDT Aug 14, 2026
1pm PDT Aug 14, 2026-6pm PDT Aug 20, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database