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

54°F

12°C

Humidity 44%
Wind Speed E 14 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 20 Jan 03:28 AM PST
Extended Forecast for

Walnut Creek CA

  • Today

    Today: Patchy dense fog before 10am.  Otherwise, mostly cloudy, with a high near 59. North northeast wind 3 to 6 mph.

    High: 59 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • Tonight

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

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 61. Light north northeast wind.

    High: 61 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 63. Calm wind becoming west around 5 mph in the afternoon.

    High: 63 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 7am.  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 42.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy dense fog before 10am. Otherwise, mostly cloudy, with a high near 59. North northeast wind 3 to 6 mph.
Tonight
Mostly cloudy, with a low around 45. Calm wind.
Wednesday
Cloudy, with a high near 61. Light north northeast wind.
Wednesday Night
Cloudy, with a low around 46. Calm wind.
Thursday
Partly sunny, with a high near 63. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 46.
Friday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 42.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Partly sunny, with a high near 61.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Mostly cloudy, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Walnut Creek CA
 37.9°N 122.07°W (Elev. 203 ft)
12:26 am PST Jan 20, 2026
4am PST Jan 20, 2026-6pm PST Jan 26, 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