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

90°F

32°C

Humidity 33%
Wind Speed NW 6 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 20 Mar 04:47 PM PDT
Extended Forecast for

7 Miles NW Mount Hamilton CA

Heat Advisory March 20, 06:42pm until March 20, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory March 20, 06:42pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 75. South wind 6 to 10 mph becoming west northwest in the afternoon.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. West wind 7 to 10 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 72. Northwest wind around 8 mph.

    High: 72 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52. Northwest wind 6 to 9 mph becoming west southwest after midnight.

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Monday Night

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

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 65. West northwest wind around 6 mph becoming east southeast in the evening.
Saturday
Mostly sunny, with a high near 75. South wind 6 to 10 mph becoming west northwest in the afternoon.
Saturday Night
Mostly clear, with a low around 54. West wind 7 to 10 mph.
Sunday
Sunny, with a high near 72. Northwest wind around 8 mph.
Sunday Night
Mostly clear, with a low around 52. Northwest wind 6 to 9 mph becoming west southwest after midnight.
Monday
Sunny, with a high near 72.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 73.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NW Mount Hamilton CA
 37.42°N 121.75°W (Elev. 2799 ft)
2:07 pm PDT Mar 20, 2026
6pm PDT Mar 20, 2026-6pm PDT Mar 27, 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