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

Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

43°F

6°C

Humidity 77%
Wind Speed NNW 5 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 28 Dec 12:00 AM PST
Extended Forecast for

14 Miles SW Keyes CA

  • Overnight

    Overnight: Areas of dense fog. Otherwise, partly cloudy, with a low around 40. West northwest wind around 6 mph.

    Low: 40 °F

    Areas Dense
    Fog

  • Sunday

    Sunday: Areas of dense fog before 1pm. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 51. Light and variable wind.

    High: 51 °F

    Areas Dense
    Fog

  • Sunday Night

    Sunday Night: Areas of fog after 10pm. Otherwise, partly cloudy, with a low around 38. Light west wind.

    Low: 38 °F

    Areas Fog

  • Monday

    Monday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 49. Light and variable wind.

    High: 49 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Areas of fog after 10pm. Otherwise, mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Areas Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 50.

    High: 50 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 51.

    High: 51 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of rain. Cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain

Detailed Forecast

Overnight
Areas of dense fog. Otherwise, partly cloudy, with a low around 40. West northwest wind around 6 mph.
Sunday
Areas of dense fog before 1pm. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 51. Light and variable wind.
Sunday Night
Areas of fog after 10pm. Otherwise, partly cloudy, with a low around 38. Light west wind.
Monday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 49. Light and variable wind.
Monday Night
Areas of fog after 10pm. Otherwise, mostly cloudy, with a low around 38. Calm wind.
Tuesday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 50.
Tuesday Night
Partly cloudy, with a low around 40.
Wednesday
Mostly cloudy, with a high near 51.
Wednesday Night
A chance of rain. Cloudy, with a low around 43.
New Year's Day
Rain likely, mainly after 10am. Cloudy, with a high near 51.
Thursday Night
Rain likely. Cloudy, with a low around 46.
Friday
A chance of rain. Mostly cloudy, with a high near 52.
Friday Night
A chance of rain. Mostly cloudy, with a low around 45.
Saturday
A slight chance of rain. Mostly cloudy, with a high near 51.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
14 Miles SW Keyes CA
 37.44°N 121.09°W (Elev. 105 ft)
Last Update:
1:20 pm PST Dec 27, 2025
Forecast Valid:
12am PST Dec 28, 2025-6pm PST Jan 3, 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