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

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

49°F

9°C

Humidity 85%
Wind Speed SSE 8 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Wind Chill46°F (8°C)
Last update 26 Dec 04:28 PM PST
Extended Forecast for

5 Miles N Discovery Bay CA

Flood Watch December 26, 05:06pm until December 26, 10:00pm
Flood Advisory December 26, 05:06pm until December 26, 06:00pm
Click here for hazard details and duration
Flood Watch
Flood Advisory
  •  
    Flood Watch December 26, 05:06pm until December 26, 10:00pm
    Flood Advisory December 26, 05:06pm until December 26, 06:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 53 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 44. South wind around 6 mph.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 52. West wind 5 to 7 mph becoming north northwest in the afternoon.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38. Northwest wind around 6 mph.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 48. North wind around 6 mph.

    High: 48 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Mostly cloudy, with a steady temperature around 53. South wind around 7 mph.
Tonight
Partly cloudy, with a low around 44. South wind around 6 mph.
Saturday
Mostly sunny, with a high near 52. West wind 5 to 7 mph becoming north northwest in the afternoon.
Saturday Night
Partly cloudy, with a low around 38. Northwest wind around 6 mph.
Sunday
Sunny, with a high near 48. North wind around 6 mph.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Patchy fog before 10pm, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 37.
Wednesday
Patchy fog. Otherwise, partly sunny, with a high near 50.
Wednesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 40.
New Year's Day
A slight chance of showers. Cloudy, with a high near 51.
Thursday Night
A chance of showers. Cloudy, with a low around 44.
Friday
A chance of showers. Partly sunny, with a high near 52.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles N Discovery Bay CA
 37.97°N 121.57°W (Elev. 3 ft)
Last Update:
12:27 pm PST Dec 26, 2025
Forecast Valid:
5pm PST Dec 26, 2025-6pm PST Jan 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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