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

Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain Returns to California

Lake effect snow will continue through Friday bringing significant snowfall to areas east to southeast of the Great Lakes. Snow squalls may impact New Year's Eve travel this evening and overnight across parts of the Great Lakes, Ohio Valley, Mid-Atlantic, and Upstate New York. Heavy rain will bring another flash flooding threat for southern California New Year's Eve into New Year's Day. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Mostly Cloudy

46°F

8°C

Humidity 75%
Wind Speed N 0 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 30 Dec 09:58 PM PST
Extended Forecast for

Mount Hamilton CA

  • Overnight

    Overnight: A 40 percent chance of rain. Mostly cloudy, with a steady temperature around 52. Southeast wind around 13 mph, with gusts as high as 21 mph.

    Low: 52 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain, mainly after 10am. Temperature falling to around 48 by 4pm. South southeast wind 6 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F⇓

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Temperature falling to near 48 by midnight, then rising to around 52 during the remainder of the night. Southeast wind 15 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 48 °F⇑

    Rain

  • New Year's Day

    New Year's Day: Rain. High near 52. Breezy, with a south wind 17 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 52 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: Rain likely, mainly before 10pm. Cloudy, with a low around 46. South southeast wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Rain Likely
    then Chance
    Rain

  • Friday

    Friday: Rain, mainly after 4pm. High near 52. Breezy. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Breezy.
    Chance Rain
    then Rain

  • Friday Night

    Friday Night: Rain before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then rain and possibly a thunderstorm after 4am. Low around 48. Breezy. Chance of precipitation is 90%.

    Low: 48 °F

    Showers and
    Breezy

  • Saturday

    Saturday: Rain. Cloudy, with a high near 50.

    High: 50 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Cloudy, with a low around 46.

    Low: 46 °F

    Rain

Detailed Forecast

Overnight
A 40 percent chance of rain. Mostly cloudy, with a steady temperature around 52. Southeast wind around 13 mph, with gusts as high as 21 mph.
Wednesday
Rain, mainly after 10am. Temperature falling to around 48 by 4pm. South southeast wind 6 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Temperature falling to near 48 by midnight, then rising to around 52 during the remainder of the night. Southeast wind 15 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
New Year's Day
Rain. High near 52. Breezy, with a south wind 17 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain likely, mainly before 10pm. Cloudy, with a low around 46. South southeast wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain, mainly after 4pm. High near 52. Breezy. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then rain and possibly a thunderstorm after 4am. Low around 48. Breezy. Chance of precipitation is 90%.
Saturday
Rain. Cloudy, with a high near 50.
Saturday Night
Rain. Cloudy, with a low around 46.
Sunday
Rain likely. Mostly cloudy, with a high near 49.
Sunday Night
Rain likely. Mostly cloudy, with a low around 43.
Monday
Rain likely. Mostly cloudy, with a high near 49.
Monday Night
Rain likely. Mostly cloudy, with a low around 43.
Tuesday
A chance of rain. Partly sunny, with a high near 51.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Hamilton CA
 37.35°N 121.64°W (Elev. 2398 ft)
Last Update:
1:30 am PST Dec 31, 2025
Forecast Valid:
5am PST Dec 31, 2025-6pm PST Jan 6, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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