Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

43°F

6°C

Humidity 72%
Wind Speed WNW 3 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 27 Dec 11:28 PM PST
Extended Forecast for

2 Miles NNW Discovery Bay CA

  • Overnight

    Overnight: Partly cloudy, with a low around 39. West northwest wind 3 to 5 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 51. Light and variable wind becoming north northwest around 6 mph in the morning.

    High: 51 °F

    Sunny

  • Sunday Night

    Sunday Night: Patchy fog before 10pm, then patchy fog after 11pm.  Otherwise, partly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Patchy Fog

  • Monday

    Monday: Mostly sunny, with a high near 50. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Patchy fog after 9pm.  Otherwise, partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 51.

    High: 51 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Areas of fog.  Otherwise, partly cloudy, with a low around 38.

    Low: 38 °F

    Areas Fog

  • Wednesday

    Wednesday: A slight chance of rain after 4pm.  Patchy fog before 10am.  Otherwise, mostly cloudy, with a high near 51.

    High: 51 °F

    Patchy Fog
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly after 10pm.  Areas of fog.  Otherwise, cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain
    and Areas Fog

Detailed Forecast

Overnight
Partly cloudy, with a low around 39. West northwest wind 3 to 5 mph.
Sunday
Sunny, with a high near 51. Light and variable wind becoming north northwest around 6 mph in the morning.
Sunday Night
Patchy fog before 10pm, then patchy fog after 11pm. Otherwise, partly cloudy, with a low around 38. Calm wind.
Monday
Mostly sunny, with a high near 50. Calm wind becoming northeast around 5 mph in the afternoon.
Monday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 37. Calm wind.
Tuesday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 51.
Tuesday Night
Areas of fog. Otherwise, partly cloudy, with a low around 38.
Wednesday
A slight chance of rain after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 51.
Wednesday Night
A chance of rain, mainly after 10pm. Areas of fog. Otherwise, cloudy, with a low around 43.
New Year's Day
Rain likely. Cloudy, with a high near 52.
Thursday Night
Rain likely. Cloudy, with a low around 45.
Friday
A chance of rain. Partly sunny, with a high near 52.
Friday Night
A chance of rain. Mostly cloudy, with a low around 44.
Saturday
A slight chance of rain. Mostly cloudy, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Discovery Bay CA
 37.92°N 121.61°W (Elev. 7 ft)
12:27 pm PST Dec 27, 2025
12am PST Dec 28, 2025-6pm PST Jan 3, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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