Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Periods of critical fire weather will persist from the central Rockies to the central Plains through the weekend as gusty winds and low relative humidity continue. Read More >

Hazardous Weather Conditions

Current conditions at

MIDDLE PEAK (MDEC1)

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

NA

73°F

23°C

Humidity 34%
Wind Speed NNW 12 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 19 Mar 11:36 PM PDT
Extended Forecast for

4 Miles W Mill Valley CA

Heat Advisory March 20, 12:13am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 20, 12:13am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Overnight

    Low: 65 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 80. Light and variable wind becoming west northwest around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 62. Northwest wind 6 to 9 mph.

    Low: 62 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 70. West northwest wind 9 to 14 mph, with gusts as high as 23 mph.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. West northwest wind 11 to 17 mph, with gusts as high as 26 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

Overnight
Clear, with a low around 65. North wind 3 to 5 mph.
Friday
Sunny, with a high near 80. Light and variable wind becoming west northwest around 6 mph in the afternoon.
Friday Night
Increasing clouds, with a low around 62. Northwest wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 70. West northwest wind 9 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 54. West northwest wind 11 to 17 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 51.
Monday
Sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
Sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Mill Valley CA
 37.9°N 122.61°W (Elev. 1109 ft)
12:07 am PDT Mar 20, 2026
12am PDT Mar 20, 2026-6pm PDT Mar 26, 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