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.

Mostly Cloudy

61°F

16°C

Humidity 59%
Wind Speed WSW 3 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 27 Jan 05:47 PM PST
Extended Forecast for

Mount Hamilton CA

  • Tonight

    Tonight: A 20 percent chance of rain. Mostly cloudy, with a steady temperature around 48. South southwest wind 3 to 8 mph.

    Low: 48 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 57. Light and variable wind becoming northwest around 6 mph in the afternoon.

    High: 57 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40. North northeast wind around 6 mph.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 61. North wind 3 to 5 mph.

    High: 61 °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.

    High: 64 °F

    Mostly Sunny

  • Friday Night

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

    Low: 46 °F

    Partly 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 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of rain. Mostly cloudy, with a steady temperature around 48. South southwest wind 3 to 8 mph.
Wednesday
Mostly sunny, with a high near 57. Light and variable wind becoming northwest around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 40. North northeast wind around 6 mph.
Thursday
Sunny, with a high near 61. 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.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
A slight chance of rain after 10am. Partly sunny, with a high near 60.
Sunday Night
A slight chance of rain. Mostly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 56.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Sunny, with a high near 59.
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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:
12:26 pm PST Jan 27, 2026
Forecast Valid:
7pm PST Jan 27, 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