National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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

LAS TRAMPAS (LTRC1)

Lat: 37.83389°NLon: 122.06694°WElev: 1760.0ft.

NA

80°F

27°C

Humidity 31%
Wind Speed ENE 12 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Heat Index79°F (26°C)
Last update 20 Mar 02:28 PM PDT
Extended Forecast for

Danville CA

Heat Advisory March 20, 02:57pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 20, 02:57pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 54. West wind around 5 mph becoming south southeast in the evening.

    Low: 54 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 82. Light and variable wind becoming west northwest 5 to 9 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 47. Southwest wind 5 to 8 mph.

    Low: 47 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 92. North northwest wind 3 to 5 mph.
Tonight
Increasing clouds, with a low around 54. West wind around 5 mph becoming south southeast in the evening.
Saturday
Mostly sunny, with a high near 82. Light and variable wind becoming west northwest 5 to 9 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 47. Southwest wind 5 to 8 mph.
Sunday
Sunny, with a high near 79. Calm wind becoming west 5 to 7 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 46.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Danville CA
 37.84°N 122°W (Elev. 587 ft)
Last Update:
2:07 pm PDT Mar 20, 2026
Forecast Valid:
2pm PDT Mar 20, 2026-6pm PDT Mar 26, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation