Fire Weather Concerns and Severe Thunderstorms through the Weekend

Dry and windy conditions, and some dry thunderstorms and lightning, may support hazardous fire activity in the northern Plains, high southern Plains and the Southwest this weekend. An active severe weather pattern is forecast for portions of the central and southern High Plains into the Upper Midwest through early the part of next week. Damaging winds, large hail, and tornadoes are possible. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

59°F

15°C

Humidity 34%
Wind Speed NNW 8 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 15 May 11:05 AM PDT
Extended Forecast for

4 Miles SSE Clayton CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 70. West wind 11 to 13 mph, with gusts as high as 23 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 55. Northwest wind 14 to 16 mph, with gusts as high as 29 mph.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 65. West northwest wind around 16 mph, with gusts as high as 30 mph.

    High: 65 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. West southwest wind 13 to 15 mph, with gusts as high as 30 mph.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 69. Breezy, with a west southwest wind 13 to 23 mph becoming north northwest in the afternoon. Winds could gust as high as 39 mph.

    High: 69 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 67. Breezy.

    Low: 67 °F

    Clear then
    Clear and
    Breezy

  • Monday

    Monday: Sunny, with a high near 76. Breezy.

    High: 76 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Clear, with a low around 54.

    Low: 54 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 70. West wind 11 to 13 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 55. Northwest wind 14 to 16 mph, with gusts as high as 29 mph.
Saturday
Sunny, with a high near 65. West northwest wind around 16 mph, with gusts as high as 30 mph.
Saturday Night
Mostly clear, with a low around 48. West southwest wind 13 to 15 mph, with gusts as high as 30 mph.
Sunday
Sunny, with a high near 69. Breezy, with a west southwest wind 13 to 23 mph becoming north northwest in the afternoon. Winds could gust as high as 39 mph.
Sunday Night
Clear, with a low around 67. Breezy.
Monday
Sunny, with a high near 76. Breezy.
Monday Night
Clear, with a low around 54.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Clear, with a low around 57.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Clear, with a low around 57.
Thursday
Sunny, with a high near 84.
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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 pm PDT May 15, 2026
1pm PDT May 15, 2026-6pm PDT May 21, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database