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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

52°F

11°C

Humidity 95%
Wind Speed NNE 10 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Last update 01 Jan 11:28 PM PST
Extended Forecast for

Pittsburg CA

  • Tonight

    Tonight: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 50. East southeast wind around 9 mph.

    Low: 50 °F

    Slight Chance
    Rain

  • Friday

    Friday: Rain likely after 4pm. Mostly cloudy, with a high near 57. East southeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 57 °F

    Mostly Cloudy
    then Rain
    Likely

  • Friday Night

    Friday Night: Rain. Low around 55. Southeast wind around 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 55 °F

    Rain

  • Saturday

    Saturday: Rain before 1pm, then showers and possibly a thunderstorm after 1pm. High near 58. South southeast wind 18 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 7pm, then rain after 7pm. Low around 54. South wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Showers

  • Sunday

    Sunday: Rain. High near 54. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 54 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Low around 49. Chance of precipitation is 80%.

    Low: 49 °F

    Rain

  • Monday

    Monday: Rain likely. Cloudy, with a high near 51.

    High: 51 °F

    Rain Likely

  • Monday Night

    Monday Night: A chance of rain, mainly before 4am. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain

Detailed Forecast

Tonight
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 50. East southeast wind around 9 mph.
Friday
Rain likely after 4pm. Mostly cloudy, with a high near 57. East southeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Friday Night
Rain. Low around 55. Southeast wind around 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain before 1pm, then showers and possibly a thunderstorm after 1pm. High near 58. South southeast wind 18 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before 7pm, then rain after 7pm. Low around 54. South wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Rain. High near 54. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain. Low around 49. Chance of precipitation is 80%.
Monday
Rain likely. Cloudy, with a high near 51.
Monday Night
A chance of rain, mainly before 4am. Mostly cloudy, with a low around 46.
Tuesday
A slight chance of rain before 10am. Partly sunny, with a high near 53.
Tuesday Night
Mostly cloudy, with a low around 45.
Wednesday
A slight chance of rain. Mostly cloudy, with a high near 51.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 42.
Thursday
A slight chance of rain. Mostly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Pittsburg CA
 38.04°N 121.87°W (Elev. 3 ft)
Last Update:
10:46 pm PST Jan 1, 2026
Forecast Valid:
11pm PST Jan 1, 2026-6pm PST Jan 8, 2026
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation