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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

STONYFORD (SYWC1)

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

NA

61°F

16°C

Humidity 82%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 55°F (13°C)
Visibility NA
Last update 17 Aug 04:26 AM PDT
Extended Forecast for

21 Miles S Alder Springs CA

  • Today

    Today: Mostly sunny, with a high near 84. Calm wind becoming east southeast 5 to 8 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. West wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 56. South southeast wind around 6 mph becoming calm in the evening.

    Low: 56 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 66.

    Low: 66 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

Detailed Forecast

Today
Mostly sunny, with a high near 84. Calm wind becoming east southeast 5 to 8 mph in the afternoon.
Tonight
Mostly clear, with a low around 53. West wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 84. Calm wind becoming southeast around 6 mph in the afternoon.
Monday Night
Clear, with a low around 56. South southeast wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 89. Calm wind becoming southeast around 6 mph in the afternoon.
Tuesday Night
Clear, with a low around 60.
Wednesday
Sunny, with a high near 95.
Wednesday Night
Clear, with a low around 66.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny and hot, with a high near 101.
Friday Night
Clear, with a low around 68.
Saturday
Sunny and hot, with a high near 100.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
21 Miles S Alder Springs CA
 39.36°N 122.65°W (Elev. 1627 ft)
Last Update:
4:21 am PDT Aug 17, 2025
Forecast Valid:
4am PDT Aug 17, 2025-6pm PDT Aug 23, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation