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

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

NA

71°F

22°C

Humidity 8%
Wind Speed N 17 MPH
Barometer NA
Dewpoint 9°F (-13°C)
Visibility NA
Last update 20 Mar 04:05 AM PDT
Extended Forecast for

8 Miles NNE Livermore Municipal CA

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

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. Southwest wind 6 to 8 mph.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 81. West wind around 9 mph, with gusts as high as 18 mph.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. West southwest wind around 11 mph, with gusts as high as 23 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. West southwest wind 7 to 9 mph becoming northwest in the morning.

    High: 79 °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 76.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 86. North wind around 6 mph.
Tonight
Mostly clear, with a low around 65. Southwest wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 81. West wind around 9 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 58. West southwest wind around 11 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 79. West southwest wind 7 to 9 mph becoming northwest in the morning.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NNE Livermore Municipal CA
 37.83°N 121.79°W (Elev. 2001 ft)
2:22 am PDT Mar 20, 2026
8am 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