Early Heat Wave in the West; Fire Concerns in the 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. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Hazardous Weather Conditions

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Clear

88°F

31°C

Humidity 27%
Wind Speed NNE 4 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 17 Mar 02:47 PM PDT
Extended Forecast for

4 Miles SW Mount Hamilton CA

Heat Advisory March 17, 03:51pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 17, 03:51pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 60 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 58. Calm wind.

    Low: 58 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 92. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 57. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 57 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

Tonight
Clear, with a low around 60. Light and variable wind.
Wednesday
Sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 58. Calm wind.
Thursday
Sunny, with a high near 92. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 57. Northwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 56.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 49.
Monday
Mostly sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 74.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Mount Hamilton CA
 37.3°N 121.69°W (Elev. 1401 ft)
1:49 pm PDT Mar 17, 2026
3pm PDT Mar 17, 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