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

Tracking Winter Weather and Frigid Temperatures Through This Weekend

A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

62°F

17°C

Humidity 40%
Wind Speed ENE 5 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 17 Jan 11:00 AM PST
Extended Forecast for

14 Miles NE Mount Hamilton CA

Dense Fog Advisory January 17, 12:01pm until January 17, 02:00pm
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory January 17, 12:01pm until January 17, 02:00pm

    NOW until 2:00pm Sat

    Dense Fog Advisory

  • This Afternoon

    High: 66 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. Light west southwest wind.

    Low: 43 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 65. Calm wind becoming north around 5 mph in the afternoon.

    High: 65 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. Light northwest wind.

    Low: 39 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 62. North wind 3 to 6 mph.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 39.

    Low: 39 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 66. Southeast wind 3 to 6 mph.
Tonight
Mostly cloudy, with a low around 43. Light west southwest wind.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 65. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 39. Light northwest wind.
M.L.King Day
Sunny, with a high near 62. North wind 3 to 6 mph.
Monday Night
Clear, with a low around 39.
Tuesday
Sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
Mostly sunny, with a high near 58.
Thursday Night
Partly cloudy, with a low around 38.
Friday
Mostly sunny, with a high near 56.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
14 Miles NE Mount Hamilton CA
 37.49°N 121.48°W (Elev. 2799 ft)
Last Update:
6:06 am PST Jan 17, 2026
Forecast Valid:
12pm PST Jan 17, 2026-6pm PST Jan 23, 2026
 
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