National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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

42°F

6°C

Humidity 59%
Wind Speed W 4 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 28 Dec 05:28 AM PST
Extended Forecast for

Bethel Island CA

  • Today

    Today: Sunny, with a high near 50. North wind around 6 mph.

    High: 50 °F

    Sunny

  • Tonight

    Tonight: Patchy fog before 10pm. Otherwise, partly cloudy, with a low around 39. North northwest wind 3 to 5 mph.

    Low: 39 °F

    Patchy Fog
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 49. Northeast wind around 6 mph.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 38. Light east wind.

    Low: 38 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 50. Northeast wind around 6 mph.

    High: 50 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog between 10pm and 1am. Otherwise, partly cloudy, with a low around 39.

    Low: 39 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 10 percent chance of rain after 4pm. Mostly cloudy, with a high near 49.

    High: 49 °F

    Cloudy then
    Slight Chance
    Rain

  • Wednesday Night

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

    Low: 43 °F

    Chance Rain
    and Patchy
    Fog

  • New Year's Day

    New Year's Day: Rain likely, mainly after 10am. Cloudy, with a high near 50.

    High: 50 °F

    Rain Likely

Detailed Forecast

Today
Sunny, with a high near 50. North wind around 6 mph.
Tonight
Patchy fog before 10pm. Otherwise, partly cloudy, with a low around 39. North northwest wind 3 to 5 mph.
Monday
Mostly sunny, with a high near 49. Northeast wind around 6 mph.
Monday Night
Increasing clouds, with a low around 38. Light east wind.
Tuesday
Partly sunny, with a high near 50. Northeast wind around 6 mph.
Tuesday Night
Patchy fog between 10pm and 1am. Otherwise, partly cloudy, with a low around 39.
Wednesday
A 10 percent chance of rain after 4pm. Mostly cloudy, with a high near 49.
Wednesday Night
A chance of rain, mainly after 10pm. Patchy fog before 10pm. Otherwise, cloudy, with a low around 43.
New Year's Day
Rain likely, mainly after 10am. Cloudy, with a high near 50.
Thursday Night
Rain likely. Cloudy, with a low around 46.
Friday
A chance of rain. Partly sunny, with a high near 52.
Friday Night
A chance of rain. Mostly cloudy, with a low around 45.
Saturday
A slight chance of rain. Mostly cloudy, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bethel Island CA
 38.03°N 121.64°W (Elev. 3 ft)
Last Update:
12:27 am PST Dec 28, 2025
Forecast Valid:
6am PST Dec 28, 2025-6pm PST Jan 3, 2026
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation