Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

Lat: 37.33333°NLon: 121.81667°WElev: 135.0ft.

Clear

45°F

7°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 43°F (6°C)
Visibility 8.00 mi
Last update 09 Dec 09:55 PM PST
Extended Forecast for

Mount Hamilton CA

  • Overnight

    Overnight: Clear, with a low around 49. North northeast wind around 6 mph.

    Low: 49 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 64. North wind around 6 mph.

    High: 64 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 50. North wind 3 to 5 mph.

    Low: 50 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 65. North northwest wind around 5 mph.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 48. Light northeast wind.

    Low: 48 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Friday Night

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

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 49. North northeast wind around 6 mph.
Wednesday
Sunny, with a high near 64. North wind around 6 mph.
Wednesday Night
Clear, with a low around 50. North wind 3 to 5 mph.
Thursday
Sunny, with a high near 65. North northwest wind around 5 mph.
Thursday Night
Clear, with a low around 48. Light northeast wind.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 48.
Saturday
Sunny, with a high near 60.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Mostly sunny, with a high near 57.
Sunday Night
Partly cloudy, with a low around 46.
Monday
A slight chance of rain. Mostly sunny, with a high near 59.
Monday Night
A chance of rain. Mostly cloudy, with a low around 50.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Hamilton CA
 37.35°N 121.64°W (Elev. 2398 ft)
12:26 pm PST Dec 9, 2025
12am PST Dec 10, 2025-6pm PST Dec 16, 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