Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. 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 32%
Wind Speed NE 2 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 18 Mar 09:50 AM PDT
Extended Forecast for

4 Miles ENE Danville CA

Heat Advisory March 18, 12:19pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 18, 12:19pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 58. Light north northwest wind.

    Low: 58 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 92. Calm wind becoming north around 5 mph in the afternoon.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 59. North wind around 5 mph becoming calm  in the evening.

    Low: 59 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 94. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 94 °F

    Sunny

  • Friday Night

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

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 92. Light northwest wind.
Tonight
Clear, with a low around 58. Light north northwest wind.
Thursday
Sunny, with a high near 92. Calm wind becoming north around 5 mph in the afternoon.
Thursday Night
Clear, with a low around 59. North wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 94. Calm wind becoming north northwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 57.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 50.
Monday
Mostly sunny, with a high near 81.
Monday Night
Mostly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Danville CA
 37.85°N 121.94°W (Elev. 1362 ft)
1:59 am PDT Mar 18, 2026
12pm PDT Mar 18, 2026-6pm PDT Mar 24, 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