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

Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Mostly Cloudy

48°F

9°C

Humidity 66%
Wind Speed WNW 3 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 30 Dec 11:55 AM PST
Extended Forecast for

Mount Hamilton CA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a steady temperature around 53. Southeast wind around 7 mph.

    High: 53 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of rain after 4am. Mostly cloudy, with a steady temperature around 52. East wind 6 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Rain, mainly after 10am. Temperature falling to around 48 by 4pm. East southeast wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F⇓

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Low around 47. South southeast wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Rain

  • New Year's Day

    New Year's Day: Rain. High near 53. South wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F

    Rain then
    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 49. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Rain Likely

  • Friday

    Friday: Rain. High near 52. Breezy. Chance of precipitation is 80%.

    High: 52 °F

    Rain and
    Breezy

  • Friday Night

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

    Low: 46 °F

    Rain

  • Saturday

    Saturday: Rain. Mostly cloudy, with a high near 49.

    High: 49 °F

    Rain

Detailed Forecast

This Afternoon
Mostly cloudy, with a steady temperature around 53. Southeast wind around 7 mph.
Tonight
A 30 percent chance of rain after 4am. Mostly cloudy, with a steady temperature around 52. East wind 6 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain, mainly after 10am. Temperature falling to around 48 by 4pm. East southeast wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Low around 47. South southeast wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
New Year's Day
Rain. High near 53. South wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain likely. Cloudy, with a low around 49. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain. High near 52. Breezy. Chance of precipitation is 80%.
Friday Night
Rain. Cloudy, with a low around 46.
Saturday
Rain. Mostly cloudy, with a high near 49.
Saturday Night
Rain likely. Mostly cloudy, with a low around 44.
Sunday
Rain likely. Mostly cloudy, with a high near 50.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 43.
Monday
A chance of rain. Partly sunny, with a high near 50.
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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:
11:51 am PST Dec 30, 2025
Forecast Valid:
12pm PST Dec 30, 2025-6pm PST Jan 5, 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