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Current conditions at

DIABLO GRANDE (DBLC1)

Lat: 37.32927°NLon: 121.29538°WElev: 1861.0ft.

NA

46°F

8°C

Humidity 48%
Wind Speed WSW 3 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Last update 27 Jan 06:00 AM PST
Extended Forecast for

15 Miles S Tracy CA

Dense Fog Advisory until January 27, 11:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until January 27, 11:00am

    NOW until 11:00am Tue

    Dense Fog Advisory

  • Today

    High: 60 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 40 percent chance of rain, mainly before 11pm.  Mostly cloudy, with a low around 42. Southwest wind around 6 mph becoming west northwest after midnight.

    Low: 42 °F

    Chance Rain
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. North wind 5 to 7 mph.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40. West northwest wind around 7 mph.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 60. West wind around 6 mph becoming north northeast in the morning.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

Detailed Forecast

Today
Increasing clouds, with a high near 60. South southwest wind around 7 mph.
Tonight
A 40 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 42. Southwest wind around 6 mph becoming west northwest after midnight.
Wednesday
Mostly sunny, with a high near 58. North wind 5 to 7 mph.
Wednesday Night
Mostly clear, with a low around 40. West northwest wind around 7 mph.
Thursday
Sunny, with a high near 60. West wind around 6 mph becoming north northeast in the morning.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Partly sunny, with a high near 63.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
Partly sunny, with a high near 63.
Sunday Night
A slight chance of rain. Partly cloudy, with a low around 43.
Monday
Sunny, with a high near 60.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles S Tracy CA
 37.52°N 121.46°W (Elev. 1969 ft)
1:21 am PST Jan 27, 2026
6am PST Jan 27, 2026-6pm PST Feb 2, 2026
 
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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