Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

62°F

17°C

Humidity 57%
Wind Speed S 8 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 15 Mar 03:28 AM PDT
Extended Forecast for

Antioch CA

Heat Advisory March 16, 10:00am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: Mostly clear, with a low around 54. West wind around 6 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 85. North northwest wind 5 to 8 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. West wind 3 to 6 mph.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 58. West southwest wind around 5 mph becoming calm  after midnight.

    Low: 58 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 62.

    Low: 62 °F

    Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 54. West wind around 6 mph.
Sunday
Sunny, with a high near 85. North northwest wind 5 to 8 mph.
Sunday Night
Mostly clear, with a low around 58. West wind 3 to 6 mph.
Monday
Sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
Clear, with a low around 58. West southwest wind around 5 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 89.
Tuesday Night
Clear, with a low around 61.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Clear, with a low around 62.
Thursday
Sunny, with a high near 93.
Thursday Night
Clear, with a low around 63.
Friday
Sunny, with a high near 94.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny, with a high near 90.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Antioch CA
 38°N 121.81°W (Elev. 36 ft)
2:40 am PDT Mar 15, 2026
3am PDT Mar 15, 2026-6pm PDT Mar 21, 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