Critical Fire Weather in the Southern High Plains; Heavy Snow in the Great Lakes and Northeast U.S.

Gusty winds and low relative humidity will bring elevated to critical fire weather conditions to the southern High Plains through the weekend. A winter storm will track across the Great Lakes and Northeast U.S. into Saturday with areas of wintry mix and heavy snow from northern New York through southern Maine. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

43°F

6°C

Humidity 70%
Wind Speed NNE 8 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Wind Chill38°F (3°C)
Last update 20 Feb 05:28 PM PST
Extended Forecast for

2 Miles ESE Antioch CA

Cold Weather Advisory February 21, 01:00am until February 21, 09:00am
Click here for hazard details and duration
Cold Weather Advisory
  • Tonight

    Tonight: Areas of frost between 1am and 2am.  Otherwise, increasing clouds, with a low around 35. Southeast wind 3 to 5 mph.

    Low: 35 °F

    Mostly Clear
    then Areas
    Frost

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 59. Southeast wind 6 to 9 mph, with gusts as high as 18 mph.

    High: 59 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41. Southeast wind around 8 mph.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 64. Southeast wind around 9 mph.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 44. Light and variable wind.

    Low: 44 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of rain after 4pm.  Mostly cloudy, with a high near 63.

    High: 63 °F

    Partly Sunny
    then Chance
    Rain

  • Monday Night

    Monday Night: Rain likely, mainly after 10pm.  Cloudy, with a low around 54. Chance of precipitation is 60%.

    Low: 54 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain.  Cloudy, with a high near 58.

    High: 58 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly before 10pm.  Cloudy, with a low around 53.

    Low: 53 °F

    Rain

Detailed Forecast

Tonight
Areas of frost between 1am and 2am. Otherwise, increasing clouds, with a low around 35. Southeast wind 3 to 5 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 59. Southeast wind 6 to 9 mph, with gusts as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 41. Southeast wind around 8 mph.
Sunday
Partly sunny, with a high near 64. Southeast wind around 9 mph.
Sunday Night
Mostly cloudy, with a low around 44. Light and variable wind.
Monday
A 30 percent chance of rain after 4pm. Mostly cloudy, with a high near 63.
Monday Night
Rain likely, mainly after 10pm. Cloudy, with a low around 54. Chance of precipitation is 60%.
Tuesday
Rain. Cloudy, with a high near 58.
Tuesday Night
Rain, mainly before 10pm. Cloudy, with a low around 53.
Wednesday
A chance of rain. Mostly cloudy, with a high near 61.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 50.
Thursday
A chance of rain. Partly sunny, with a high near 65.
Thursday Night
A chance of rain. Partly cloudy, with a low around 50.
Friday
A slight chance of rain. Mostly sunny, with a high near 66.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Antioch CA
 37.99°N 121.77°W (Elev. 200 ft)
2:25 pm PST Feb 20, 2026
6pm PST Feb 20, 2026-6pm PST Feb 27, 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