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

Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

LAS TRAMPAS (LTRC1)

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

NA

47°F

8°C

Humidity 67%
Wind Speed ENE 19 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 08 Dec 07:28 AM PST
Extended Forecast for

2 Miles SE Walnut Creek CA

  • Today

    Today: Areas of dense fog before 11am. Otherwise, mostly sunny, with a high near 52. Calm wind becoming north around 5 mph.

    High: 52 °F

    Areas Dense
    Fog then
    Sunny

  • Tonight

    Tonight: Patchy dense fog after 9pm. Otherwise, partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Dense
    Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 54. Calm wind becoming north around 5 mph in the afternoon.

    High: 54 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after midnight. Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Areas of fog before 9am. Otherwise, sunny, with a high near 65. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 65 °F

    Areas Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Areas of fog before 9am. Otherwise, sunny, with a high near 65.

    High: 65 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Areas of fog before 9am. Otherwise, sunny, with a high near 64.

    High: 64 °F

    Areas Fog
    then Sunny

Detailed Forecast

Today
Areas of dense fog before 11am. Otherwise, mostly sunny, with a high near 52. Calm wind becoming north around 5 mph.
Tonight
Patchy dense fog after 9pm. Otherwise, partly cloudy, with a low around 40. Calm wind.
Tuesday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 54. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 42. Calm wind.
Wednesday
Areas of fog before 9am. Otherwise, sunny, with a high near 65. Calm wind becoming north northeast around 5 mph in the afternoon.
Wednesday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 43.
Thursday
Areas of fog before 9am. Otherwise, sunny, with a high near 65.
Thursday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 42.
Friday
Areas of fog before 9am. Otherwise, sunny, with a high near 64.
Friday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 41.
Saturday
Areas of fog. Otherwise, mostly sunny, with a high near 64.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Walnut Creek CA
 37.88°N 122.03°W (Elev. 220 ft)
Last Update:
6:22 am PST Dec 8, 2025
Forecast Valid:
8am PST Dec 8, 2025-6pm PST Dec 14, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation