Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

LAS TRAMPAS (LTRC1)

Lat: 37.83389°NLon: 122.06694°WElev: 1760.0ft.

NA

57°F

14°C

Humidity 42%
Wind Speed ESE 8 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 21 Jan 10:28 AM PST
Extended Forecast for

2 Miles NNW San Ramon CA

  • Today

    Today: Cloudy, with a high near 60. Calm wind.

    High: 60 °F

    Cloudy

  • Tonight

    Tonight: Cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 61. Calm wind becoming west around 5 mph in the afternoon.

    High: 61 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 45. Light southwest wind.

    Low: 45 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 59. Light and variable wind.

    High: 59 °F

    Patchy Fog
    then Sunny

  • Friday Night

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

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Saturday Night

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

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

Detailed Forecast

Today
Cloudy, with a high near 60. Calm wind.
Tonight
Cloudy, with a low around 45. Calm wind.
Thursday
Partly sunny, with a high near 61. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 45. Light southwest wind.
Friday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 59. Light and variable wind.
Friday Night
Partly cloudy, with a low around 42.
Saturday
Sunny, with a high near 60.
Saturday Night
Mostly clear, with a low around 38.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Mostly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 61.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW San Ramon CA
 37.77°N 121.98°W (Elev. 518 ft)
2:13 am PST Jan 21, 2026
11am PST Jan 21, 2026-6pm PST Jan 27, 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