Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

57°F

14°C

Humidity 37%
Wind Speed N 5 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 19 Jan 03:28 AM PST
Extended Forecast for

Bethel Island CA

  • M.L.King Day

    M.L.King Day: Patchy dense fog before 11am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 57. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 57 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Tonight

    Tonight: Patchy fog.  Otherwise, increasing clouds, with a low around 41. Calm wind.

    Low: 41 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 11am.  Otherwise, mostly cloudy, with a high near 60. North northeast wind 3 to 5 mph.

    High: 60 °F

    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 9am.  Otherwise, mostly cloudy, with a high near 59. Light north northeast wind.

    High: 59 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 45.

    Low: 45 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 61.

    High: 61 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 9pm.  Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am.  Otherwise, partly sunny, with a high near 59.

    High: 59 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

M.L.King Day
Patchy dense fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 57. Calm wind becoming north northeast around 5 mph in the afternoon.
Tonight
Patchy fog. Otherwise, increasing clouds, with a low around 41. Calm wind.
Tuesday
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 60. North northeast wind 3 to 5 mph.
Tuesday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 42. Calm wind.
Wednesday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 59. Light north northeast wind.
Wednesday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 45.
Thursday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 61.
Thursday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 43.
Friday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 59.
Friday Night
Patchy fog before 1am, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 43.
Saturday
Patchy fog. Otherwise, partly sunny, with a high near 59.
Saturday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 43.
Sunday
Patchy fog. Otherwise, mostly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Bethel Island CA
 38.03°N 121.64°W (Elev. 3 ft)
12:26 am PST Jan 19, 2026
4am PST Jan 19, 2026-6pm PST Jan 25, 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