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 81%
Wind Speed N 0 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 48°F (9°C)
Visibility 8.00 mi
Last update 31 Dec 02:47 PM PST
Extended Forecast for

Mount Hamilton CA

  • This Afternoon

    This Afternoon: Rain. Steady temperature around 50. East southeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain

  • Tonight

    Tonight: Rain. Low around 47. South southeast wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 47 °F

    Rain

  • New Year's Day

    New Year's Day: Rain, mainly before 4pm. Temperature falling to around 49 by noon. 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: 52 °F⇓

    Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 44. South southeast wind 9 to 11 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Chance Rain

  • Friday

    Friday: A 30 percent chance of rain, mainly after 10am. Mostly cloudy, with a high near 52. South wind 14 to 16 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain, mainly after 10pm. Low around 48. Breezy. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Rain and
    Breezy

  • Saturday

    Saturday: Rain before 10am, then showers and possibly a thunderstorm after 10am. High near 52. Breezy. Chance of precipitation is 100%.

    High: 52 °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 48.

    Low: 48 °F

    Showers

  • Sunday

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

    High: 50 °F

    Rain

Detailed Forecast

This Afternoon
Rain. Steady temperature around 50. East southeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain. Low around 47. South southeast wind 14 to 18 mph, with gusts as high as 26 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 49 by noon. 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 40 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 44. South southeast wind 9 to 11 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 52. South wind 14 to 16 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 48. 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 52. 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 48.
Sunday
Rain. Cloudy, with a high near 50.
Sunday Night
Rain. Mostly cloudy, with a low around 45.
Monday
Rain likely. Mostly cloudy, with a high near 49.
Monday Night
Rain likely. Mostly cloudy, with a low around 44.
Tuesday
A chance of rain. Partly sunny, with a high near 50.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 41.
Wednesday
A chance of rain. Partly sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Hamilton CA
 37.35°N 121.64°W (Elev. 2398 ft)
Last Update:
2:14 pm PST Dec 31, 2025
Forecast Valid:
3pm PST Dec 31, 2025-6pm PST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation