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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. 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 NNE 5 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 07 Dec 04:28 PM PST
Extended Forecast for

3 Miles W Danville CA

  • Tonight

    Tonight: Patchy dense fog after 9pm. Otherwise, mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Patchy Dense
    Fog

  • Monday

    Monday: Areas of dense fog before 10am. Otherwise, sunny, with a high near 59. North wind 3 to 5 mph.

    High: 59 °F

    Areas Dense
    Fog then
    Sunny

  • Monday Night

    Monday Night: Patchy fog before midnight, then patchy fog after 3am. Otherwise, mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. Otherwise, sunny, with a high near 59. Calm wind becoming north around 5 mph in the afternoon.

    High: 59 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog before 11pm, then patchy fog after 5am. Otherwise, mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 10am. Otherwise, sunny, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog before 9pm, then patchy fog after 5am. Otherwise, mostly clear, with a low around 45.

    Low: 45 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 10am. Otherwise, sunny, with a high near 63.

    High: 63 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Tonight
Patchy dense fog after 9pm. Otherwise, mostly clear, with a low around 41. Calm wind.
Monday
Areas of dense fog before 10am. Otherwise, sunny, with a high near 59. North wind 3 to 5 mph.
Monday Night
Patchy fog before midnight, then patchy fog after 3am. Otherwise, mostly clear, with a low around 43. Calm wind.
Tuesday
Areas of fog before 10am. Otherwise, sunny, with a high near 59. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
Patchy fog before 11pm, then patchy fog after 5am. Otherwise, mostly clear, with a low around 44. Calm wind.
Wednesday
Patchy fog before 10am. Otherwise, sunny, with a high near 62.
Wednesday Night
Patchy fog before 9pm, then patchy fog after 5am. Otherwise, mostly clear, with a low around 45.
Thursday
Areas of fog before 10am. Otherwise, sunny, with a high near 63.
Thursday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 44.
Friday
Patchy fog before 10am. Otherwise, sunny, with a high near 62.
Friday Night
Patchy fog. Otherwise, mostly clear, with a low around 43.
Saturday
Patchy fog. Otherwise, mostly sunny, with a high near 61.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44.
Sunday
Patchy fog. Otherwise, mostly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Danville CA
 37.8°N 122.07°W (Elev. 974 ft)
Last Update:
5:02 pm PST Dec 7, 2025
Forecast Valid:
5pm PST Dec 7, 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