National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Wet and Cool in the East this Memorial Day Weekend; Well Above Normal Temperatures in the Northern Plains

A wet Memorial Day weekend is in store for the East, with widespread rainfall of 1 to more than 2 inches expected from the Gulf Coast to southern New England. Well above normal temperatures are forecast to build across the northern Plains. Another round of heavy to excessive rainfall is expected to impact the western Gulf Coast this weekend with Flood Watches in effect. 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: Mostly clear, with a low around 48. Southwest wind around 14 mph, with gusts as high as 26 mph.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 61. Southwest wind 13 to 15 mph, with gusts as high as 29 mph.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48. West southwest wind 15 to 18 mph, with gusts as high as 38 mph.

    Low: 48 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Sunny, with a high near 58. West southwest wind 17 to 21 mph, with gusts as high as 39 mph.

    High: 58 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 48. West southwest wind 16 to 20 mph, with gusts as high as 39 mph.

    Low: 48 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 59. Breezy.

    High: 59 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 49.

    Low: 49 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 48. Southwest wind around 14 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 61. Southwest wind 13 to 15 mph, with gusts as high as 29 mph.
Sunday Night
Partly cloudy, with a low around 48. West southwest wind 15 to 18 mph, with gusts as high as 38 mph.
Memorial Day
Sunny, with a high near 58. West southwest wind 17 to 21 mph, with gusts as high as 39 mph.
Monday Night
Partly cloudy, with a low around 48. West southwest wind 16 to 20 mph, with gusts as high as 39 mph.
Tuesday
Sunny, with a high near 59. Breezy.
Tuesday Night
Clear, with a low around 49.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 71.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 74.
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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:
1:39 pm PDT May 23, 2026
Forecast Valid:
6pm PDT May 23, 2026-6pm PDT May 30, 2026
 
Forecast Discussion
 
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