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

San Jose, San Jose International Airport (KSJC)

Lat: 37.35917°NLon: 121.92417°WElev: 59.0ft.

Partly Cloudy

54°F

12°C

Humidity 71%
Wind Speed NW 4 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 45°F (7°C)
Visibility 8.00 mi
Last update 07 Dec 02:35 PM PST
Extended Forecast for

Santa Clara CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 58. Northwest wind around 6 mph.

    High: 58 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog before 10pm, then patchy fog after 11pm. Otherwise, mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 10am. Otherwise, sunny, with a high near 63. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 64. Light and variable wind.

    High: 64 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, sunny, with a high near 68.

    High: 68 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 46.

    Low: 46 °F

    Clear then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, sunny, with a high near 69.

    High: 69 °F

    Patchy Fog
    then Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 58. Northwest wind around 6 mph.
Tonight
Patchy fog before 10pm, then patchy fog after 11pm. Otherwise, mostly clear, with a low around 41. Calm wind.
Monday
Patchy fog before 10am. Otherwise, sunny, with a high near 63. Calm wind becoming northwest around 6 mph in the afternoon.
Monday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 42. Calm wind.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 64. Light and variable wind.
Tuesday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 44.
Wednesday
Patchy fog before 8am. Otherwise, sunny, with a high near 68.
Wednesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 46.
Thursday
Patchy fog before 9am. Otherwise, sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Santa Clara CA
 37.39°N 121.97°W (Elev. 26 ft)
Last Update:
12:41 pm PST Dec 7, 2025
Forecast Valid:
2pm PST Dec 7, 2025-6pm PST Dec 13, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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Chance of Precipitation