Heavy Precipitation in the West; Wintry Mix in the North; Fire Weather in the High Plains

Pacific moisture will continue to bring locally heavy coastal/lower elevation rain and heavy mountain snow to the West Coast and portions of the Intermountain West through Monday. A wintry mix will create hazardous travel across the northern Plains and Upper Midwest into early Monday. Dry, gusty winds are resulting in elevated to critical fire weather in the south/central High Plains. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

NA

37°F

3°C

Humidity 100%
Wind Speed S 15 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Wind Chill28°F (-2°C)
Last update 05 Jan 12:55 AM PST
Extended Forecast for

7 Miles SSW Brentwood CA

  • Overnight

    Overnight: A 30 percent chance of showers.  Cloudy, with a low around 47. South southeast wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 47 °F

    Chance
    Showers

  • Monday

    Monday: Showers, mainly after 10am.  High near 54. South southeast wind 10 to 18 mph, with gusts as high as 33 mph.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Showers

  • Monday Night

    Monday Night: Showers likely, mainly before 10pm.  Cloudy, then gradually becoming partly cloudy, with a low around 46. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 53. North northeast wind 3 to 6 mph.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 46. Calm wind becoming west southwest around 5 mph after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers. Cloudy, with a low around 47. South southeast wind 10 to 14 mph, with gusts as high as 25 mph.
Monday
Showers, mainly after 10am. High near 54. South southeast wind 10 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Showers likely, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 46. Southeast wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Partly sunny, with a high near 53. North northeast wind 3 to 6 mph.
Tuesday Night
Mostly cloudy, with a low around 46. Calm wind becoming west southwest around 5 mph after midnight.
Wednesday
Mostly sunny, with a high near 52.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Sunny, with a high near 49.
Thursday Night
Mostly clear, with a low around 38.
Friday
Patchy frost before 7am. Otherwise, mostly sunny, with a high near 48.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 50.
Saturday Night
Mostly clear, with a low around 38.
Sunday
Mostly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSW Brentwood CA
 37.83°N 121.74°W (Elev. 932 ft)
12:56 am PST Jan 5, 2026
1am PST Jan 5, 2026-6pm PST Jan 11, 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