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

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

NA

59°F

15°C

Humidity 48%
Wind Speed NW 6 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 07 Dec 11:35 AM PST
Extended Forecast for

5 Miles ENE Danville CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 56. Northwest wind 3 to 7 mph.

    High: 56 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 46. North wind 5 to 13 mph.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 58. North northeast wind 5 to 9 mph becoming light north.

    High: 58 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46. West northwest wind around 6 mph.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 57. North wind 10 to 14 mph.

    High: 57 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 56. Northwest wind 3 to 7 mph.
Tonight
Mostly clear, with a low around 46. North wind 5 to 13 mph.
Monday
Sunny, with a high near 58. North northeast wind 5 to 9 mph becoming light north.
Monday Night
Mostly clear, with a low around 46. West northwest wind around 6 mph.
Tuesday
Mostly sunny, with a high near 57. North wind 10 to 14 mph.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 60.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 46.
Saturday
Mostly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ENE Danville CA
 37.85°N 121.91°W (Elev. 1601 ft)
2:33 am PST Dec 7, 2025
12pm PST Dec 7, 2025-6pm PST Dec 13, 2025
 
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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