Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Clear

72°F

22°C

Humidity 56%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 Mar 09:57 PM PDT
Extended Forecast for

7 Miles NW Mount Hamilton CA

Heat Advisory March 20, 06:32am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 20, 06:32am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 69. Northwest wind around 6 mph becoming southeast after midnight.

    Low: 69 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 79. West northwest wind 6 to 9 mph.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57. West wind 7 to 10 mph.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. Northwest wind around 8 mph.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 89. East northeast wind around 6 mph becoming west southwest in the morning.
Tonight
Mostly clear, with a low around 69. Northwest wind around 6 mph becoming southeast after midnight.
Saturday
Mostly sunny, with a high near 79. West northwest wind 6 to 9 mph.
Saturday Night
Mostly clear, with a low around 57. West wind 7 to 10 mph.
Sunday
Sunny, with a high near 78. Northwest wind around 8 mph.
Sunday Night
Mostly clear, with a low around 54.
Monday
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NW Mount Hamilton CA
 37.42°N 121.75°W (Elev. 2799 ft)
2:22 am PDT Mar 20, 2026
6am PDT Mar 20, 2026-6pm PDT Mar 26, 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