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

42°F

6°C

Humidity 70%
Wind Speed NNE 10 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill36°F (2°C)
Last update 20 Feb 07:28 PM PST
Extended Forecast for

3 Miles SSE Pittsburg 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: Patchy frost between 1am and 2am.  Otherwise, increasing clouds, with a low around 36. Southeast wind 5 to 7 mph.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 57. Southeast wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 57 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: A 10 percent chance of rain after 4am.  Partly cloudy, with a low around 42. South southeast wind around 13 mph, with gusts as high as 18 mph.

    Low: 42 °F

    Mostly Clear
    then Slight
    Chance Rain

  • Sunday

    Sunday: A 20 percent chance of rain before 10am.  Partly sunny, with a high near 64. Southeast wind around 11 mph.

    High: 64 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 44. Southwest wind around 6 mph becoming north after midnight.

    Low: 44 °F

    Mostly Cloudy

  • Monday

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

    High: 63 °F

    Partly Sunny
    then Chance
    Rain

  • Monday Night

    Monday Night: Rain, mainly after 10pm.  Low around 54. Chance of precipitation is 80%.

    Low: 54 °F

    Rain

  • 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 52.

    Low: 52 °F

    Rain

Detailed Forecast

Tonight
Patchy frost between 1am and 2am. Otherwise, increasing clouds, with a low around 36. Southeast wind 5 to 7 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 57. Southeast wind 8 to 11 mph, with gusts as high as 20 mph.
Saturday Night
A 10 percent chance of rain after 4am. Partly cloudy, with a low around 42. South southeast wind around 13 mph, with gusts as high as 18 mph.
Sunday
A 20 percent chance of rain before 10am. Partly sunny, with a high near 64. Southeast wind around 11 mph.
Sunday Night
Mostly cloudy, with a low around 44. Southwest wind around 6 mph becoming north after midnight.
Monday
A 30 percent chance of rain after 4pm. Partly sunny, with a high near 63.
Monday Night
Rain, mainly after 10pm. Low around 54. Chance of precipitation is 80%.
Tuesday
Rain. Cloudy, with a high near 58.
Tuesday Night
Rain, mainly before 10pm. Cloudy, with a low around 52.
Wednesday
A chance of rain. Mostly cloudy, with a high near 60.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 50.
Thursday
A chance of rain. Partly sunny, with a high near 64.
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 65.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Pittsburg CA
 37.97°N 121.86°W (Elev. 692 ft)
2:25 pm PST Feb 20, 2026
8pm 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