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Severe Thunderstorm and Excessive Rainfall Potential for the Central U.S. Today

Severe thunderstorms with a threat for large hail, isolated damaging winds and possibly a tornado are expected in parts of eastern Colorado today from mid afternoon to early evening. Several days of heavy rainfall will begin today over the western Gulf Coast where Flood Watches and excessive rainfall outlooks have been issued for today, Saturday, and Sunday. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

N/A

Humidity 28%
Wind Speed NW 9 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update 17 May 05:05 PM PDT
Extended Forecast for

4 Miles SSE Clayton CA

  • Tonight

    Tonight: Clear, with a low around 59. West southwest wind around 11 mph, with gusts as high as 22 mph.

    Low: 59 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 72. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 72 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 53. Southwest wind 11 to 14 mph, with gusts as high as 26 mph.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 67. West wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 67 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52. West southwest wind around 15 mph, with gusts as high as 28 mph.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 59. West southwest wind around 11 mph, with gusts as high as 22 mph.
Friday
Sunny, with a high near 72. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.
Friday Night
Mostly clear, with a low around 53. Southwest wind 11 to 14 mph, with gusts as high as 26 mph.
Saturday
Sunny, with a high near 67. West wind 10 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 52. West southwest wind around 15 mph, with gusts as high as 28 mph.
Sunday
Sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 50.
Memorial Day
Sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
Last Update:
1:26 pm PDT May 21, 2026
Forecast Valid:
4pm PDT May 21, 2026-6pm PDT May 28, 2026
 
Forecast Discussion
 
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Additional Resources

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