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

58°F

14°C

Humidity 31%
Wind Speed N 5 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Last update 18 Jan 09:28 PM PST
Extended Forecast for

6 Miles ESE Clayton CA

  • Tonight

    Tonight: Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 59. North wind 3 to 6 mph.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41. Light and variable wind.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 59. Northeast wind around 6 mph.

    High: 59 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 44. Calm wind.
M.L.King Day
Mostly sunny, with a high near 59. North wind 3 to 6 mph.
Monday Night
Partly cloudy, with a low around 41. Light and variable wind.
Tuesday
Partly sunny, with a high near 59. Northeast wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 44. Calm wind.
Wednesday
Mostly cloudy, with a high near 58.
Wednesday Night
Mostly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Mostly clear, with a low around 44.
Friday
Mostly sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 43.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Clayton CA
 37.93°N 121.85°W (Elev. 787 ft)
12:26 pm PST Jan 18, 2026
10pm PST Jan 18, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database