Heavy Rain in the Southern U.S.; Winter Storm to Impact the Northern Mid-Atlantic and Interior Northeast

A storm system stretching from the Tennessee Valley to the Gulf Coast will bring a variety of hazards to the Eastern U.S. through Tuesday. On the south side of the system, heavy rain and thunderstorms will persist across the Southern U.S. Further north, a wintry precipitation mix is expected from the Central Appalachians to the interior Northeast through Tuesday. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

42°F

6°C

Humidity 95%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Wind Chill39°F (4°C)
Last update 02 Dec 02:00 AM PST
Extended Forecast for

19 Miles ENE Mount Hamilton CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy through mid morning, then clearing, with a high near 54. Calm wind becoming east around 6 mph in the afternoon.

    High: 54 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43. Calm wind becoming northwest 5 to 9 mph after midnight.

    Low: 43 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 50. North wind around 11 mph, with gusts as high as 20 mph.

    High: 50 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 42. Light southwest wind.

    Low: 42 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 44. Calm wind.
Tuesday
Mostly cloudy through mid morning, then clearing, with a high near 54. Calm wind becoming east around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 43. Calm wind becoming northwest 5 to 9 mph after midnight.
Wednesday
Mostly sunny, with a high near 50. North wind around 11 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 42. Light southwest wind.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Mostly clear, with a low around 44.
Friday
Sunny, with a high near 54.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 55.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Mostly sunny, with a high near 56.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
19 Miles ENE Mount Hamilton CA
 37.42°N 121.32°W (Elev. 2201 ft)
1:21 am PST Dec 2, 2025
2am PST Dec 2, 2025-6pm PST Dec 8, 2025
 
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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