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

Atmospheric River Impacting the West Coast

A strong frontal system impacting California will bring gusty winds, heavy rain, and mountain snow. White out/blizzard conditions and heavy snow in the Sierra Nevada may cause road closures and travel delays. Additionally flash flooding and debris flows are possible across parts of central and southern California. A wintry mix is expected in the Tennessee Valley into the southern Appalachians. Read More >

Hazardous Weather Conditions

Current conditions at

BLACK DIAMOND (PIBC1)

Lat: 37.95°NLon: 121.884444°WElev: 1600ft.

NA

42°F

6°C

Humidity 92%
Wind Speed ESE 18 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Wind Chill34°F (1°C)
Last update 26 Jan 11:28 PM PST
Extended Forecast for

4 Miles SSE Clayton CA

Flash Flood Watch until January 28, 04:00pm
Wind Advisory until January 27, 07:00am
Click here for hazard details and duration
Flash Flood Watch
Wind Advisory
  •  
    Flash Flood Watch until January 28, 04:00pm
    Wind Advisory until January 27, 07:00am

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • Tonight

    Tonight: Rain. The rain could be heavy at times. Steady temperature around 46. Windy, with a south wind 33 to 38 mph decreasing to 20 to 25 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Heavy Rain
    and Windy

    Low: 46 °F

  • Wednesday

    Wednesday: Rain. High near 49. South wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Rain

    High: 49 °F

  • Wednesday
    Night

    Wednesday Night: Rain. Temperature rising to around 50 by 11pm. South southeast wind 14 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Rain

    Low: 46 °F⇑

  • Thursday

    Thursday: Rain before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rain. High near 50. South wind 8 to 13 mph becoming light and variable. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Heavy Rain

    High: 50 °F

  • Thursday
    Night

    Thursday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 43. West wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Rain Likely

    Low: 43 °F

  • Friday

    Friday: A 20 percent chance of rain. Mostly sunny, with a high near 49. New precipitation amounts of less than a tenth of an inch possible.

    Slight Chance
    Rain

    High: 49 °F

  • Friday
    Night

    Friday Night: A 40 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 44.

    Chance Rain

    Low: 44 °F

  • Saturday

    Saturday: A chance of rain, mainly before 10am. Partly sunny, with a high near 50.

    Chance Rain

    High: 50 °F

Detailed Forecast

Tonight
Rain. The rain could be heavy at times. Steady temperature around 46. Windy, with a south wind 33 to 38 mph decreasing to 20 to 25 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Wednesday
Rain. High near 49. South wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain. Temperature rising to around 50 by 11pm. South southeast wind 14 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rain. High near 50. South wind 8 to 13 mph becoming light and variable. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 43. West wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 49. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 40 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 44.
Saturday
A chance of rain, mainly before 10am. Partly sunny, with a high near 50.
Saturday Night
A slight chance of rain after 10pm. Partly cloudy, with a low around 44.
Sunday
A chance of rain, mainly after 10am. Partly sunny, with a high near 53.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 48.
Monday
A chance of rain. Partly sunny, with a high near 53.
Monday Night
A chance of rain. Mostly cloudy, with a low around 45.
Tuesday
A chance of rain. Partly sunny, with a high near 50.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
4 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
Last Update:
10:58 pm PST Jan 26, 2021
Forecast Valid:
11pm PST Jan 26, 2021-6pm PST Feb 2, 2021
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation