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

Cold Front Moving Through the Northeast U.S. Monday; Atmospheric River to Impact the Pacific Northwest Midweek

A cold front will cross the Great Lakes and Northeast U.S. through Monday with gusty winds and areas of rain showers. A strong atmospheric river is expected to move into the Pacific Northwest by midweek bringing a threat for moderate to heavy rainfall, gusty winds, and mountain snows for parts of Washington, Oregon, northern California, and the Sierra Nevada. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

70°F

21°C

Humidity 54%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Last update 02 Nov 04:28 PM PST
Extended Forecast for

Clayton CA

  • Tonight

    Tonight: Mostly clear, with a low around 51. Calm wind becoming southwest 5 to 8 mph in the evening.

    Low: 51 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 75. West southwest wind 9 to 14 mph, with gusts as high as 18 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 50. Southwest wind 7 to 14 mph.

    Low: 50 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. South southwest wind 5 to 10 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Rain, mainly after 4am. Low around 56. Breezy, with a south wind 20 to 28 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 56 °F

    Breezy.
    Chance Rain
    then Rain

  • Wednesday

    Wednesday: Rain, mainly before 4pm. High near 69. Breezy. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 69 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain before 10pm. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance Rain
    then Mostly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 51. Calm wind becoming southwest 5 to 8 mph in the evening.
Monday
Sunny, with a high near 75. West southwest wind 9 to 14 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 50. Southwest wind 7 to 14 mph.
Tuesday
Mostly sunny, with a high near 76. South southwest wind 5 to 10 mph.
Tuesday Night
Rain, mainly after 4am. Low around 56. Breezy, with a south wind 20 to 28 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain, mainly before 4pm. High near 69. Breezy. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
A 40 percent chance of rain before 10pm. Mostly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
A slight chance of rain. Mostly cloudy, with a low around 51.
Sunday
A chance of rain. Mostly cloudy, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Clayton CA
 37.94°N 121.94°W (Elev. 400 ft)
Last Update:
12:59 pm PST Nov 2, 2025
Forecast Valid:
5pm PST Nov 2, 2025-6pm PST Nov 9, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation