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

BLACK DIAMOND (PIBC1)

Lat: 37.95°NLon: 121.88444°WElev: 1600.0ft.

NA

76°F

24°C

Humidity 51%
Wind Speed N 8 MPH
Barometer NA
Dewpoint 57°F (14°C)
Visibility NA
Heat Index78°F (26°C)
Last update 19 Mar 01:28 PM PDT
Extended Forecast for

5 Miles W Brentwood CA

Heat Advisory March 19, 02:05pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 19, 02:05pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 64. West northwest wind around 5 mph becoming calm  after midnight.

    Low: 64 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 92. Calm wind becoming north around 5 mph in the afternoon.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Northwest wind 5 to 7 mph becoming southwest in the evening.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 87. West wind 6 to 8 mph.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 90. North northwest wind around 6 mph.
Tonight
Clear, with a low around 64. West northwest wind around 5 mph becoming calm after midnight.
Friday
Sunny, with a high near 92. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 63. Northwest wind 5 to 7 mph becoming southwest in the evening.
Saturday
Mostly sunny, with a high near 87. West wind 6 to 8 mph.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 78.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Brentwood CA
 37.92°N 121.79°W (Elev. 400 ft)
1:26 pm PDT Mar 19, 2026
2pm PDT Mar 19, 2026-6pm PDT Mar 25, 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