Lala Impacting Hawaii; Flash Flooding Risks; Excessive Heat

Lala will continue to impact Hawaii through the weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Thunderstorms, heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians and the mid-Atlantic through today. Record heat continues for areas of the Mississippi Valley into the Southeast. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125.0ft.

Clear

72°F

22°C

Humidity 56%
Wind Speed S 4 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 16 Aug 12:15 PM PDT
Extended Forecast for

Saint Helena CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 54. Calm wind.

    Low: 54 °F

    Increasing
    Clouds

  • Monday

    Monday: Patchy fog before 9am.  Otherwise, cloudy through mid morning, then gradual clearing, with a high near 85. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 1am.  Otherwise, increasing clouds, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog between 7am and 9am.  Otherwise, mostly sunny, with a high near 87. Calm wind.

    High: 87 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 86.

    High: 86 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph.
Tonight
Increasing clouds, with a low around 54. Calm wind.
Monday
Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 85. Calm wind becoming west southwest around 5 mph in the afternoon.
Monday Night
Patchy fog after 1am. Otherwise, increasing clouds, with a low around 53. Calm wind.
Tuesday
Patchy fog between 7am and 9am. Otherwise, mostly sunny, with a high near 87. Calm wind.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Patchy fog. Otherwise, mostly sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 53.
Saturday
Patchy fog. Otherwise, sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.51°N 122.49°W (Elev. 594 ft)
12:11 pm PDT Aug 16, 2026
12pm PDT Aug 16, 2026-6pm PDT Aug 22, 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