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

A Couple of Fast Moving Storms Affecting Areas Along and East of the Rockies

A couple of storm systems will impact travel conditions through the first half of this weekend. Heavy snow from the mountains of the West will move into the upper Midwest and upper Great Lakes through tonight. Record warmth and Gulf moisture along and east of the Mississippi River will fuel severe thunderstorms, heavy rainfall, fog for the Tennessee Valley and deep South on Friday into Saturday. 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 9 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Wind Chill23°F (-5°C)
Last update 08 Jan 03:40 AM PST
Extended Forecast for

4 Miles ENE Danville 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 42. Northwest wind around 10 mph, with gusts as high as 23 mph.

    Low: 42 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 52. North wind 7 to 10 mph, with gusts as high as 21 mph.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. North wind 5 to 7 mph.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 51. Northeast wind around 7 mph.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 33. Light east northeast wind.

    Low: 33 °F

    Frost

  • Saturday

    Saturday: Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 54.

    High: 54 °F

    Frost then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Patchy frost after 3am. Otherwise, partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy
    then Patchy
    Frost

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 42. Northwest wind around 10 mph, with gusts as high as 23 mph.
Thursday
Sunny, with a high near 52. North wind 7 to 10 mph, with gusts as high as 21 mph.
Thursday Night
Mostly clear, with a low around 34. North wind 5 to 7 mph.
Friday
Sunny, with a high near 51. Northeast wind around 7 mph.
Friday Night
Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 33. Light east northeast wind.
Saturday
Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 54.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Partly sunny, with a high near 55.
Sunday Night
Patchy frost after 3am. Otherwise, partly cloudy, with a low around 36.
Monday
Patchy frost before 7am. Otherwise, sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Mostly sunny, with a high near 60.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Danville CA
 37.85°N 121.94°W (Elev. 1362 ft)
Last Update:
12:26 am PST Jan 8, 2026
Forecast Valid:
3am PST Jan 8, 2026-6pm PST Jan 14, 2026
 
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Additional Resources

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