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

Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Current conditions at

LAS TRAMPAS (LTRC1)

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

NA

54°F

12°C

Humidity 59%
Wind Speed E 20 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 11 Dec 12:28 AM PST
Extended Forecast for

5 Miles SSE Lamorinda CA

  • Overnight

    Overnight: Mostly clear, with a low around 42. North northeast wind 11 to 13 mph, with gusts as high as 20 mph.

    Low: 42 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 56. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 42. North northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58. North northeast wind around 9 mph.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. East wind around 6 mph.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 59.

    High: 59 °F

    Areas Fog
    then Mostly
    Sunny

  • Sunday Night

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

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 42. North northeast wind 11 to 13 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 56. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 42. North northeast wind around 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 58. North northeast wind around 9 mph.
Friday Night
Mostly clear, with a low around 41. East wind around 6 mph.
Saturday
Sunny, with a high near 61.
Saturday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 41.
Sunday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 59.
Monday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 49.
Tuesday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 60.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 51.
Wednesday
A chance of rain. Mostly cloudy, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Lamorinda CA
 37.8°N 122.1°W (Elev. 853 ft)
Last Update:
12:26 am PST Dec 11, 2025
Forecast Valid:
1am PST Dec 11, 2025-6pm PST Dec 17, 2025
 
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