Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains tonight, crossing the Midwest and reaching the Gulf Coast Friday night. Dangerously cold temperatures will persist across the eastern U.S. into early February. There is increasing confidence for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

57°F

14°C

Humidity 59%
Wind Speed NW 2 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 29 Jan 02:28 PM PST
Extended Forecast for

2 Miles SSE Bethel Island CA

  • Tonight

    Tonight: Patchy fog after 8pm.  Otherwise, mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Fog

  • Friday

    Friday: Mostly cloudy, with a high near 58. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 58 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Patchy fog between 9pm and 10pm.  Otherwise, mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 61. Calm wind becoming east northeast around 5 mph in the morning.

    High: 61 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Patchy fog between 10pm and 1am.  Otherwise, mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Fog

  • Sunday

    Sunday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 40. Calm wind.
Friday
Mostly cloudy, with a high near 58. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
Patchy fog between 9pm and 10pm. Otherwise, mostly cloudy, with a low around 42. Calm wind.
Saturday
Mostly cloudy, with a high near 61. Calm wind becoming east northeast around 5 mph in the morning.
Saturday Night
Patchy fog between 10pm and 1am. Otherwise, mostly cloudy, with a low around 44. Calm wind.
Sunday
Mostly cloudy, with a high near 62.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 62.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Partly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Bethel Island CA
 38.01°N 121.64°W (Elev. 3 ft)
12:27 pm PST Jan 29, 2026
3pm PST Jan 29, 2026-6pm PST Feb 5, 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