Severe Weather in the Central Plains; Fire Concerns in the Southern High Plains and Southwest; Late-Season Mountain Snow

Severe storms, including large hail, wind, and perhaps a couple of tornadoes, are possible in the central Plains. Dry, windy conditions and lightning from dry thunderstorms may produce hazardous fire conditions in the Southwest and southern High Plains. Late-season snow is expected in the Northwest and the Great Basin. Heat is spreading across the eastern U.S.. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

54°F

12°C

Humidity 44%
Wind Speed NW 6 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 16 May 10:45 AM PDT
Extended Forecast for

4 Miles SSE Clayton CA

  • Today

    Today: Sunny, with a high near 65. West northwest wind around 16 mph, with gusts as high as 28 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 47. West northwest wind 13 to 15 mph, with gusts as high as 29 mph.

    Low: 47 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 73. Breezy, with a north wind 14 to 22 mph, with gusts as high as 39 mph.

    High: 73 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 66. Breezy, with a north wind 21 to 24 mph, with gusts as high as 50 mph.

    Low: 66 °F

    Clear and
    Breezy

  • Monday

    Monday: Sunny, with a high near 78. Breezy, with a north wind 21 to 26 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 55 mph.

    High: 78 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 65. West northwest wind around 16 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 47. West northwest wind 13 to 15 mph, with gusts as high as 29 mph.
Sunday
Sunny, with a high near 73. Breezy, with a north wind 14 to 22 mph, with gusts as high as 39 mph.
Sunday Night
Clear, with a low around 66. Breezy, with a north wind 21 to 24 mph, with gusts as high as 50 mph.
Monday
Sunny, with a high near 78. Breezy, with a north wind 21 to 26 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 55 mph.
Monday Night
Clear, with a low around 59.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Clear, with a low around 64.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Clear, with a low around 64.
Thursday
Sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 61.
Friday
Sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
1:26 am PDT May 16, 2026
11am PDT May 16, 2026-6pm PDT May 22, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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