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

Hazardous Weather Conditions

Current conditions at

LAS TRAMPAS (LTRC1)

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

NA

90°F

32°C

Humidity 22%
Wind Speed NE 11 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Heat Index87°F (31°C)
Last update 04 Oct 01:28 PM PDT
Extended Forecast for

Walnut Creek CA

Heat Advisory October 4, 01:50pm until October 7, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory October 4, 01:50pm until October 7, 10:00pm

    NOW until 10:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 101 °F

    Hot

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 66. Calm wind.

    Low: 66 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny and hot, with a high near 102. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 102 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 66. Light south southwest wind.

    Low: 66 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 101. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 101 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 66.

    Low: 66 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

Detailed Forecast

This Afternoon
Mostly cloudy and hot, with a high near 101. Light north wind.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 66. Calm wind.
Monday
Sunny and hot, with a high near 102. Calm wind becoming west northwest around 5 mph in the afternoon.
Monday Night
Clear, with a low around 66. Light south southwest wind.
Tuesday
Sunny and hot, with a high near 101. Calm wind becoming west northwest around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 66.
Wednesday
Sunny and hot, with a high near 100.
Wednesday Night
Clear, with a low around 61.
Thursday
Sunny, with a high near 94.
Thursday Night
Clear, with a low around 60.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Walnut Creek CA
 37.9°N 122.04°W (Elev. 220 ft)
Last Update:
1:26 pm PDT Oct 4, 2026
Forecast Valid:
1pm PDT Oct 4, 2026-6pm PDT Oct 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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