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

Tracking Late Season Winter Storms

A moderate atmospheric river will continue to bring heavy snow over the Olympics, northern Cascades and northern Rockies Friday while heavy rain may bring flooding to coastal Oregon and Washington. A winter storm will continue to push across the Great Lakes and Northeast U.S. Friday and Saturday with areas of heavy snow and high winds. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

60°F

16°C

Humidity 6%
Wind Speed WNW 9 MPH
Barometer NA
Dewpoint -5°F (-21°C)
Visibility NA
Last update 12 Mar 08:50 PM PDT
Extended Forecast for

3 Miles S Clayton CA

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 57. Southwest wind around 8 mph.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75. Southwest wind 6 to 8 mph becoming northwest in the morning.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, then becoming mostly clear toward daybreak, with a low around 52. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 52 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 74. Southwest wind 8 to 10 mph becoming northwest in the afternoon.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56. West wind around 10 mph, with gusts as high as 18 mph.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 57. Southwest wind around 8 mph.
Friday
Mostly sunny, with a high near 75. Southwest wind 6 to 8 mph becoming northwest in the morning.
Friday Night
Mostly cloudy, then becoming mostly clear toward daybreak, with a low around 52. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 74. Southwest wind 8 to 10 mph becoming northwest in the afternoon.
Saturday Night
Mostly clear, with a low around 56. West wind around 10 mph, with gusts as high as 18 mph.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Clear, with a low around 66.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Clear, with a low around 60.
Thursday
Sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Clayton CA
 37.9°N 121.92°W (Elev. 1900 ft)
Last Update:
1:26 am PDT Mar 13, 2026
Forecast Valid:
3am PDT Mar 13, 2026-6pm PDT Mar 19, 2026
 
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Additional Resources

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