Heavy Rainfall and Flooding in the Mid-Atlantic; Heat and Wildfire Concerns in the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region through tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the West with dry and breezy conditions. Watching the tropics across the Southeast. Read More >

Current conditions at

Mount Diablo Summit Museum and Trailhead Rooftop (SJS02)

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

NA

74°F

23°C

Humidity 33%
Wind Speed W 12 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 15 Jul 03:10 AM PDT
Extended Forecast for

4 Miles S Clayton CA

  • Overnight

    Overnight: A slight chance of drizzle.  Partly cloudy, with a steady temperature around 71. Southwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 71 °F

    Slight Chance
    Drizzle

  • Tuesday

    Tuesday: A slight chance of drizzle before 11am.  Sunny, with a high near 74. Southwest wind 9 to 11 mph, with gusts as high as 23 mph.

    High: 74 °F

    Slight Chance
    Drizzle then
    Sunny

  • Tuesday Night

    Tuesday Night: A chance of drizzle, mainly after 11pm.  Partly cloudy, with a low around 62. South southwest wind around 11 mph, with gusts as high as 23 mph.

    Low: 62 °F

    Chance
    Drizzle

  • Wednesday

    Wednesday: Sunny, with a high near 69. West southwest wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 63. West southwest wind 9 to 11 mph, with gusts as high as 23 mph.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of drizzle. Partly cloudy, with a steady temperature around 71. Southwest wind around 10 mph, with gusts as high as 21 mph.
Tuesday
A slight chance of drizzle before 11am. Sunny, with a high near 74. Southwest wind 9 to 11 mph, with gusts as high as 23 mph.
Tuesday Night
A chance of drizzle, mainly after 11pm. Partly cloudy, with a low around 62. South southwest wind around 11 mph, with gusts as high as 23 mph.
Wednesday
Sunny, with a high near 69. West southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 63. West southwest wind 9 to 11 mph, with gusts as high as 23 mph.
Thursday
Sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
3:02 am PDT Jul 15, 2025
3am PDT Jul 15, 2025-6pm PDT Jul 21, 2025
 
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Additional Resources

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