National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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

STONYFORD (SYWC1)

Lat: 39.35523°NLon: 122.65831°WElev: 1540.0ft.

NA

54°F

12°C

Humidity 78%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 16 Aug 02:26 AM PDT
Extended Forecast for

19 Miles E Potter Valley CA

  • Overnight

    Overnight: Mostly clear, with a low around 59. East northeast wind around 6 mph.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. East northeast wind 5 to 8 mph becoming south in the afternoon.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 64. West wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 78. Northeast wind 5 to 7 mph becoming south in the afternoon.

    High: 78 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. Southwest wind 5 to 8 mph becoming north northwest after midnight.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 59. East northeast wind around 6 mph.
Sunday
Sunny, with a high near 78. East northeast wind 5 to 8 mph becoming south in the afternoon.
Sunday Night
Increasing clouds, with a low around 64. West wind around 5 mph becoming calm in the evening.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 78. Northeast wind 5 to 7 mph becoming south in the afternoon.
Monday Night
Partly cloudy, with a low around 64. Southwest wind 5 to 8 mph becoming north northwest after midnight.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 66.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 63.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
19 Miles E Potter Valley CA
 39.32°N 122.76°W (Elev. 3999 ft)
Last Update:
2:00 am PDT Aug 16, 2026
Forecast Valid:
2am PDT Aug 16, 2026-6pm PDT Aug 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation