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 & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Overcast

54°F

12°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 50°F (10°C)
Visibility 5.00 mi
Last update 31 Dec 03:55 PM PST
Extended Forecast for

Mount Hamilton CA

  • This Afternoon

    This Afternoon: Rain. Steady temperature around 50. Southeast wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain

  • Tonight

    Tonight: Rain. Low around 48. South southeast wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 48 °F

    Rain

  • New Year's Day

    New Year's Day: Rain, mainly before 4pm. Temperature falling to around 50 by 11am. South southwest wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 54 °F⇓

    Rain

  • Thursday Night

    Thursday Night: A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 46. South wind around 10 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Chance Rain

  • Friday

    Friday: A 30 percent chance of rain, mainly after 10am. Mostly cloudy, with a high near 55. South wind around 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain, mainly after 10pm. Low around 50. Breezy. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 50 °F

    Rain and
    Breezy

  • Saturday

    Saturday: Rain before 10am, then showers and possibly a thunderstorm after 10am. High near 56. Breezy. Chance of precipitation is 100%.

    High: 56 °F

    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 4am, then rain and possibly a thunderstorm after 4am. Cloudy, with a low around 49.

    Low: 49 °F

    Showers

  • Sunday

    Sunday: Rain. Cloudy, with a high near 53.

    High: 53 °F

    Rain

Detailed Forecast

This Afternoon
Rain. Steady temperature around 50. Southeast wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain. Low around 48. South southeast wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
New Year's Day
Rain, mainly before 4pm. Temperature falling to around 50 by 11am. South southwest wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 46. South wind around 10 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of rain, mainly after 10am. Mostly cloudy, with a high near 55. South wind around 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain, mainly after 10pm. Low around 50. Breezy. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Rain before 10am, then showers and possibly a thunderstorm after 10am. High near 56. Breezy. Chance of precipitation is 100%.
Saturday Night
Showers and possibly a thunderstorm before 4am, then rain and possibly a thunderstorm after 4am. Cloudy, with a low around 49.
Sunday
Rain. Cloudy, with a high near 53.
Sunday Night
Rain. Mostly cloudy, with a low around 47.
Monday
Rain likely. Mostly cloudy, with a high near 52.
Monday Night
Rain likely. Mostly cloudy, with a low around 47.
Tuesday
A chance of rain. Partly sunny, with a high near 51.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 45.
Wednesday
A chance of rain. Partly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Hamilton CA
 37.35°N 121.62°W (Elev. 3406 ft)
Last Update:
2:14 pm PST Dec 31, 2025
Forecast Valid:
4pm PST Dec 31, 2025-6pm PST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation