Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Hazardous Weather Conditions

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Clear

133°F

56°C

Humidity 55%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 112°F (44°C)
Visibility 10.00 mi
Heat Index289°F (143°C)
Last update 18 Mar 09:57 PM PDT
Extended Forecast for

10 Miles NNE Mount Hamilton CA

Heat Advisory March 19, 05:07am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 19, 05:07am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 52. North wind 6 to 8 mph.

    Low: 52 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 86. North wind around 7 mph.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 52. North northwest wind around 8 mph becoming southwest after midnight.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 80. West northwest wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 84. North northeast wind 5 to 8 mph.
Tonight
Clear, with a low around 52. North wind 6 to 8 mph.
Friday
Sunny, with a high near 86. North wind around 7 mph.
Friday Night
Mostly clear, with a low around 52. North northwest wind around 8 mph becoming southwest after midnight.
Saturday
Mostly sunny, with a high near 80. West northwest wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 70.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNE Mount Hamilton CA
 37.48°N 121.56°W (Elev. 3707 ft)
2:33 am PDT Mar 19, 2026
5am PDT Mar 19, 2026-6pm PDT Mar 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database