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

Tracking Winter Storm and Severe Weather Impacts Through This Weekend

Heavy mountain snow will continue into Thursday afternoon across the Cascades. Two fast moving storms will track from the southern Rockies to the Great Lakes Thursday and then Friday into Sunday with areas of gusty winds, and heavy snow. In the Southeast U.S., severe thunderstorms and heavy to excessive rainfall are forecast on Friday. Read More >

Hazardous Weather Conditions

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

31°F

-1°C

Humidity 100%
Wind Speed WNW 8 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Wind Chill24°F (-4°C)
Last update 08 Jan 03:20 AM PST
Extended Forecast for

6 Miles NE San Ramon CA

Cold Weather Advisory January 9, 01:00am until January 9, 09:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 40. West northwest wind around 18 mph, with gusts as high as 30 mph.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 46. North wind around 14 mph, with gusts as high as 25 mph.

    High: 46 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. North wind around 10 mph, with gusts as high as 18 mph.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 46. Northeast wind around 9 mph.

    High: 46 °F

    Sunny

  • Friday Night

    Friday Night: Patchy frost between midnight and 1am. Otherwise, mostly clear, with a low around 34. East northeast wind around 6 mph.

    Low: 34 °F

    Clear then
    Patchy Frost

  • Saturday

    Saturday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 40. West northwest wind around 18 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 46. North wind around 14 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 34. North wind around 10 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 46. Northeast wind around 9 mph.
Friday Night
Patchy frost between midnight and 1am. Otherwise, mostly clear, with a low around 34. East northeast wind around 6 mph.
Saturday
Mostly sunny, with a high near 49.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
Partly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Sunny, with a high near 53.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 55.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NE San Ramon CA
 37.83°N 121.88°W (Elev. 1913 ft)
Last Update:
12:26 am PST Jan 8, 2026
Forecast Valid:
3am PST Jan 8, 2026-6pm PST Jan 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation