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

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

STONYFORD (SYWC1)

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

NA

94°F

34°C

Humidity 23%
Wind Speed NE 2 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Heat Index91°F (33°C)
Last update 02 Aug 10:26 AM PDT
Extended Forecast for

19 Miles E Potter Valley CA

  • Today

    Today: Sunny, with a high near 87. Southwest wind 5 to 8 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 70. West northwest wind 5 to 7 mph becoming east northeast after midnight.

    Low: 70 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 90. Northeast wind 6 to 8 mph becoming south southeast in the afternoon.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 72. South southwest wind around 6 mph becoming north northwest after midnight.

    Low: 72 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. North wind around 7 mph becoming south southeast in the afternoon.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 70.

    Low: 70 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 69.

    Low: 69 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 87. Southwest wind 5 to 8 mph.
Tonight
Clear, with a low around 70. West northwest wind 5 to 7 mph becoming east northeast after midnight.
Monday
Sunny, with a high near 90. Northeast wind 6 to 8 mph becoming south southeast in the afternoon.
Monday Night
Clear, with a low around 72. South southwest wind around 6 mph becoming north northwest after midnight.
Tuesday
Sunny, with a high near 89. North wind around 7 mph becoming south southeast in the afternoon.
Tuesday Night
Clear, with a low around 70.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Clear, with a low around 69.
Thursday
Sunny, with a high near 87.
Thursday Night
Clear, with a low around 70.
Friday
Sunny, with a high near 88.
Friday Night
Clear, with a low around 71.
Saturday
Sunny, with a high near 88.
Basemap Options
Click map to change the forecast location
Loading map...
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 2, 2026
Forecast Valid:
10am PDT Aug 2, 2026-6pm PDT Aug 8, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation