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. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday 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

70°F

21°C

Humidity 33%
Wind Speed NNW 5 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 19 Mar 05:36 AM PDT
Extended Forecast for

4 Miles W Mill Valley CA

Heat Advisory March 19, 06:01am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 19, 06:01am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 64. North northeast wind 3 to 7 mph.

    Low: 64 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 79. Light and variable wind becoming west northwest around 5 mph in the afternoon.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. West northwest wind 7 to 9 mph.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 71. West northwest wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 71 °F

    Partly Sunny

  • Saturday Night

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

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 80. Northwest wind 3 to 6 mph.
Tonight
Clear, with a low around 64. North northeast wind 3 to 7 mph.
Friday
Sunny, with a high near 79. Light and variable wind becoming west northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 63. West northwest wind 7 to 9 mph.
Saturday
Partly sunny, with a high near 71. West northwest wind 10 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 52.
Monday
Sunny, with a high near 67.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 63.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Mill Valley CA
 37.9°N 122.61°W (Elev. 1109 ft)
5:12 am PDT Mar 19, 2026
6am PDT Mar 19, 2026-6pm PDT Mar 25, 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