Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Clear

64°F

18°C

Humidity 72%
Wind Speed N 0 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 18 Mar 08:47 AM PDT
Extended Forecast for

Mount Hamilton CA

Heat Advisory March 18, 09:51am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 18, 09:51am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 61. West northwest wind around 5 mph becoming light and variable  in the evening.

    Low: 61 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 88. Light and variable wind becoming north northeast around 5 mph in the morning.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 62. North wind 3 to 6 mph.

    Low: 62 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 88. Northwest wind 3 to 5 mph.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny, with a high near 87. Light and variable wind becoming west southwest around 5 mph in the afternoon.
Tonight
Clear, with a low around 61. West northwest wind around 5 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 88. Light and variable wind becoming north northeast around 5 mph in the morning.
Thursday Night
Clear, with a low around 62. North wind 3 to 6 mph.
Friday
Sunny, with a high near 88. Northwest wind 3 to 5 mph.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 53.
Monday
Mostly sunny, with a high near 76.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 74.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Hamilton CA
 37.35°N 121.64°W (Elev. 2398 ft)
1:59 am PDT Mar 18, 2026
9am PDT Mar 18, 2026-6pm PDT Mar 24, 2026
 
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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