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

Late January Extreme Cold; Watching East Coast Storm Threat This Weekend

The next blast of Arctic air surges south down the Plains, across the Great Lakes and through the Southeast and East Friday through Saturday. This could be longest duration of cold in several decades. Forecast models are being closely monitored for potential of another significant winter storm to impact the eastern United States this coming weekend. Confidence in coastal impacts has increased. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Clear

48°F

9°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.39 in (1029.12 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 28 Jan 06:55 AM PST
Extended Forecast for

Mount Hamilton CA

  • Today

    Today: Sunny, with a high near 58. Light and variable wind becoming northwest around 6 mph in the afternoon.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 41. Northeast wind around 6 mph.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 62. North wind 3 to 5 mph.

    High: 62 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45. Northeast wind 3 to 5 mph.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 64. Northeast wind 3 to 5 mph.

    High: 64 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 58. Light and variable wind becoming northwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 41. Northeast wind around 6 mph.
Thursday
Sunny, with a high near 62. North wind 3 to 5 mph.
Thursday Night
Partly cloudy, with a low around 45. Northeast wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 64. Northeast wind 3 to 5 mph.
Friday Night
Mostly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Hamilton CA
 37.35°N 121.64°W (Elev. 2398 ft)
Last Update:
4:54 am PST Jan 28, 2026
Forecast Valid:
7am PST Jan 28, 2026-6pm PST Feb 3, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation