Current conditions at

Mount Diablo Summit Museum and Trailhead Rooftop (SJS02)

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

NA

28°C

82°F

Humidity 24%
Wind Speed SW 4 MPH
Barometer NA
Dewpoint 6°C (42°F)
Visibility NA
Heat Index27°C (80°F)
Last update 14 Jul 02:25 PM PDT
Extended Forecast for

4 Miles SSE Clayton CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 27. West southwest wind around 16 km/h, with gusts as high as 34 km/h.

    High: 27 °C

    Sunny

  • Tonight

    Tonight: Clear, with a low around 19. West southwest wind around 16 km/h, with gusts as high as 35 km/h.

    Low: 19 °C

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 23. Southwest wind 14 to 18 km/h, with gusts as high as 37 km/h.

    High: 23 °C

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 16. Southwest wind 16 to 18 km/h, with gusts as high as 39 km/h.

    Low: 16 °C

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 21. Southwest wind 11 to 18 km/h, with gusts as high as 37 km/h.

    High: 21 °C

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 17.

    Low: 17 °C

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 22.

    High: 22 °C

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 17.

    Low: 17 °C

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 22.

    High: 22 °C

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 27. West southwest wind around 16 km/h, with gusts as high as 34 km/h.
Tonight
Clear, with a low around 19. West southwest wind around 16 km/h, with gusts as high as 35 km/h.
Tuesday
Sunny, with a high near 23. Southwest wind 14 to 18 km/h, with gusts as high as 37 km/h.
Tuesday Night
Mostly clear, with a low around 16. Southwest wind 16 to 18 km/h, with gusts as high as 39 km/h.
Wednesday
Sunny, with a high near 21. Southwest wind 11 to 18 km/h, with gusts as high as 37 km/h.
Wednesday Night
Mostly clear, with a low around 17.
Thursday
Sunny, with a high near 22.
Thursday Night
Mostly clear, with a low around 17.
Friday
Sunny, with a high near 22.
Friday Night
Mostly clear, with a low around 17.
Saturday
Sunny, with a high near 23.
Saturday Night
Mostly clear, with a low around 17.
Sunday
Sunny, with a high near 23.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 m)
1:26 pm PDT Jul 14, 2025
2pm PDT Jul 14, 2025-6pm PDT Jul 20, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database