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

Areas of Showers and Thunderstorms to Start the Work Week

Areas of rain and thunderstorms are forecast Monday across the central and eastern states. Some mixed rain and snow is possible in the high Sierra Mountains. Heavy to excessive rain may bring flooding in the central Appalachians. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

80°F

27°C

Humidity 39%
Wind Speed S 14 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Heat Index80°F (27°C)
Last update 19 Sep 04:28 PM PDT
Extended Forecast for

5 Miles SSE Clayton CA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 54. South southwest wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 65. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54. Southwest wind around 9 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70. West southwest wind 3 to 7 mph.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Southwest wind 5 to 9 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 54. South southwest wind 7 to 10 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 65. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 54. Southwest wind around 9 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 70. West southwest wind 3 to 7 mph.
Tuesday Night
Mostly clear, with a low around 56. Southwest wind 5 to 9 mph.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Sunny, with a high near 71.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 69.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
Last Update:
1:25 pm PDT Sep 20, 2026
Forecast Valid:
6pm PDT Sep 20, 2026-6pm PDT Sep 27, 2026
 
Forecast Discussion
 
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Additional Resources

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