Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Hazardous Weather Conditions

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

69°F

21°C

Humidity 45%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 17 Mar 07:28 AM PDT
Extended Forecast for

4 Miles ENE Clayton CA

Heat Advisory March 17, 08:05am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 17, 08:05am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 60. Northeast wind around 6 mph becoming southwest in the evening.

    Low: 60 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84. Southeast wind 5 to 7 mph becoming north northeast in the morning.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 61. North wind around 7 mph becoming west southwest after midnight.

    Low: 61 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 86. West wind around 7 mph becoming north northeast in the morning.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 82. North northeast wind around 7 mph.
Tonight
Clear, with a low around 60. Northeast wind around 6 mph becoming southwest in the evening.
Wednesday
Sunny, with a high near 84. Southeast wind 5 to 7 mph becoming north northeast in the morning.
Wednesday Night
Clear, with a low around 61. North wind around 7 mph becoming west southwest after midnight.
Thursday
Sunny, with a high near 86. West wind around 7 mph becoming north northeast in the morning.
Thursday Night
Clear, with a low around 63.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Clayton CA
 37.95°N 121.88°W (Elev. 1358 ft)
1:54 am PDT Mar 17, 2026
8am PDT Mar 17, 2026-6pm PDT Mar 23, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database