Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

MIDDLE PEAK (MDEC1)

Lat: 37.92778°NLon: 122.58722°WElev: 2339.0ft.

NA

77°F

25°C

Humidity 31%
Wind Speed NW 6 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Heat Index78°F (26°C)
Last update 04 Aug 05:36 AM PDT
Extended Forecast for

San Anselmo CA

  • Today

    Today: Widespread haze between 7am and 8am. Sunny, with a high near 91. Calm wind becoming south southwest 5 to 7 mph in the morning.

    High: 91 °F

    Haze then
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 55. West wind around 5 mph becoming calm  in the evening.

    Low: 55 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 85. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 85 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. West southwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Widespread haze between 7am and 8am. Sunny, with a high near 91. Calm wind becoming south southwest 5 to 7 mph in the morning.
Tonight
Increasing clouds, with a low around 55. West wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 85. Calm wind becoming south southwest around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 56. West southwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 86.
Sunday Night
Mostly clear, with a low around 57.
Monday
Sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
San Anselmo CA
 38°N 122.56°W (Elev. 236 ft)
5:16 am PDT Aug 4, 2026
5am PDT Aug 4, 2026-6pm PDT Aug 10, 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