Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

MIDDLE PEAK (MDEC1)

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

NA

85°F

29°C

Humidity 34%
Wind Speed NW 5 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Heat Index83°F (28°C)
Last update 20 Mar 03:36 PM PDT
Extended Forecast for

3 Miles WNW Mill Valley CA

Heat Advisory March 20, 04:05pm until March 20, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory March 20, 04:05pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 69. Northwest wind 11 to 18 mph, with gusts as high as 29 mph.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52. West northwest wind 13 to 21 mph, with gusts as high as 32 mph.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 64. Northwest wind 6 to 9 mph.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. West northwest wind around 9 mph.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Monday Night

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

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 60. Northwest wind 8 to 10 mph.
Saturday
Mostly sunny, with a high near 69. Northwest wind 11 to 18 mph, with gusts as high as 29 mph.
Saturday Night
Mostly clear, with a low around 52. West northwest wind 13 to 21 mph, with gusts as high as 32 mph.
Sunday
Sunny, with a high near 64. Northwest wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 50. West northwest wind around 9 mph.
Monday
Sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 67.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 65.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Mill Valley CA
 37.92°N 122.59°W (Elev. 2224 ft)
2:07 pm PDT Mar 20, 2026
4pm PDT Mar 20, 2026-6pm PDT Mar 27, 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