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 >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Mostly Cloudy

64°F

18°C

Humidity 67%
Wind Speed WNW 3 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 21 Mar 09:47 AM PDT
Extended Forecast for

3 Miles SSE Mount Hamilton CA

  • Today

    Today: Mostly sunny, with a high near 76. West northwest wind 5 to 9 mph, with gusts as high as 18 mph.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 50. North northwest wind 6 to 9 mph.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 73. North wind around 7 mph becoming west northwest in the afternoon.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. Northwest wind 5 to 7 mph.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72. West wind 5 to 7 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 76. West northwest wind 5 to 9 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 50. North northwest wind 6 to 9 mph.
Sunday
Sunny, with a high near 73. North wind around 7 mph becoming west northwest in the afternoon.
Sunday Night
Mostly clear, with a low around 50. Northwest wind 5 to 7 mph.
Monday
Sunny, with a high near 72. West wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Mount Hamilton CA
 37.31°N 121.63°W (Elev. 2933 ft)
2:22 am PDT Mar 21, 2026
10am PDT Mar 21, 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