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

75°F

24°C

Humidity 44%
Wind Speed N 0 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 20 Mar 10:47 AM PDT
Extended Forecast for

10 Miles NNW Mount Hamilton CA

Heat Advisory March 20, 11:36am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 20, 11:36am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 66. Southwest wind around 7 mph.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 77. West northwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56. West southwest wind 9 to 13 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 75. Northwest wind around 10 mph.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °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

Detailed Forecast

Today
Sunny, with a high near 85. South southwest wind around 6 mph becoming west in the afternoon.
Tonight
Mostly clear, with a low around 66. Southwest wind around 7 mph.
Saturday
Mostly sunny, with a high near 77. West northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 56. West southwest wind 9 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 75. Northwest wind around 10 mph.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 72.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 70.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNW Mount Hamilton CA
 37.48°N 121.68°W (Elev. 3599 ft)
2:22 am PDT Mar 20, 2026
11am 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