Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

LAS TRAMPAS (LTRC1)

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

NA

57°F

14°C

Humidity 33%
Wind Speed E 18 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 19 Jan 06:28 PM PST
Extended Forecast for

2 Miles NNW San Ramon CA

  • Tonight

    Tonight: Patchy fog before 3am, then patchy fog after 4am.  Otherwise, increasing clouds, with a low around 40. Calm wind.

    Low: 40 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy dense fog before 10am.  Otherwise, partly sunny, with a high near 61. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 61 °F

    Patchy Dense
    Fog then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 61. Calm wind.

    High: 61 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Cloudy

  • Thursday

    Thursday: Patchy fog between 7am and 8am.  Otherwise, partly sunny, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 3am.  Otherwise, partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog before 3am, then patchy fog after 4am. Otherwise, increasing clouds, with a low around 40. Calm wind.
Tuesday
Patchy dense fog before 10am. Otherwise, partly sunny, with a high near 61. Calm wind becoming east northeast around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 45. Calm wind.
Wednesday
Mostly cloudy, with a high near 61. Calm wind.
Wednesday Night
Cloudy, with a low around 45. Calm wind.
Thursday
Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 63.
Thursday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 44.
Friday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 62.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 61.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 41.
Monday
Patchy fog. Otherwise, partly sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW San Ramon CA
 37.77°N 121.98°W (Elev. 518 ft)
1:15 pm PST Jan 19, 2026
7pm PST Jan 19, 2026-6pm PST Jan 26, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database