Frigid Airmass to Bring Significantly Colder Temperatures; Snow Continues Downwind of the Great Lakes

A frigid cold airmass will bring significantly colder weather across the eastern two thirds of the country early this week. Record low temperatures are expected in the Southeast by Tuesday morning. Moderate to heavy lake effect snow will continue downwind of the Great Lakes through Monday. Several inches of snow accumulation is expected, including in portions of the Chicago Metro Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

69°F

21°C

Humidity 29%
Wind Speed ESE 3 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 10 Nov 03:35 AM PST
Extended Forecast for

6 Miles ENE San Ramon CA

  • Overnight

    Overnight: Partly cloudy, with a low around 55. Northeast wind around 8 mph.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. Northeast wind 5 to 7 mph becoming calm.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. North northeast wind 7 to 9 mph.

    Low: 56 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Mostly cloudy, with a high near 76. Northeast wind around 5 mph becoming calm.

    High: 76 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 53. Calm wind becoming west northwest around 5 mph after midnight.

    Low: 53 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely after 4pm.  Mostly cloudy, with a high near 67. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Mostly Cloudy
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain.  Low around 51. Chance of precipitation is 90%.

    Low: 51 °F

    Rain

  • Thursday

    Thursday: Rain.  Mostly cloudy, with a high near 58.

    High: 58 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain.  Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 55. Northeast wind around 8 mph.
Monday
Mostly sunny, with a high near 80. Northeast wind 5 to 7 mph becoming calm.
Monday Night
Partly cloudy, with a low around 56. North northeast wind 7 to 9 mph.
Veterans Day
Mostly cloudy, with a high near 76. Northeast wind around 5 mph becoming calm.
Tuesday Night
Mostly cloudy, with a low around 53. Calm wind becoming west northwest around 5 mph after midnight.
Wednesday
Rain likely after 4pm. Mostly cloudy, with a high near 67. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain. Low around 51. Chance of precipitation is 90%.
Thursday
Rain. Mostly cloudy, with a high near 58.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 45.
Friday
A chance of rain. Mostly cloudy, with a high near 55.
Friday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 44.
Saturday
Patchy fog. Otherwise, mostly sunny, with a high near 60.
Saturday Night
A slight chance of rain. Patchy fog. Otherwise, partly cloudy, with a low around 45.
Sunday
A chance of rain. Partly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ENE San Ramon CA
 37.79°N 121.87°W (Elev. 801 ft)
1:27 am PST Nov 10, 2025
3am PST Nov 10, 2025-6pm PST Nov 16, 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