Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

61°F

16°C

Humidity 20%
Wind Speed NW 8 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Last update 09 Dec 12:05 PM PST
Extended Forecast for

6 Miles NE San Ramon CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 58. North northeast wind around 6 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a steady temperature around 50. North northeast wind 3 to 5 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 59. North northeast wind around 6 mph.

    High: 59 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46. Light east northeast wind.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 59. North northeast wind around 6 mph.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 58. North northeast wind around 6 mph.
Tonight
Mostly clear, with a steady temperature around 50. North northeast wind 3 to 5 mph.
Wednesday
Sunny, with a high near 59. North northeast wind around 6 mph.
Wednesday Night
Mostly clear, with a low around 46. Light east northeast wind.
Thursday
Sunny, with a high near 59. North northeast wind around 6 mph.
Thursday Night
Mostly clear, with a low around 44.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 43.
Saturday
Mostly sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Mostly cloudy, with a low around 45.
Monday
A slight chance of rain. Partly sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NE San Ramon CA
 37.83°N 121.88°W (Elev. 1913 ft)
9:23 am PST Dec 9, 2025
12pm PST Dec 9, 2025-6pm PST Dec 15, 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