Record Warmth Lingers; Fire Weather Concerns; Unsettled Pacific Northwest

More record warm temperatures are forecast this week from California, Southwest, Plains then into the Mississippi Valley and Southeast. The warmth combining with dry conditions may result in elevated to locally critical fire weather conditions. Meanwhile, another Pacific system will move across the Pacific Northwest with lower elevation rain and mountain snows. For Hawaii, conditions improving. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

64°F

18°C

Humidity 39%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 22 Mar 11:50 AM PDT
Extended Forecast for

3 Miles S Clayton CA

  • Tonight

    Tonight: Mostly clear, with a low around 56. West southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 56 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72. West wind 9 to 13 mph, with gusts as high as 24 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. West wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 54. West southwest wind 11 to 14 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Wednesday Night

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

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 56. West southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 72. West wind 9 to 13 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 56. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 74. West wind 8 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Clear, with a low around 54. West southwest wind 11 to 14 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Mostly sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Clayton CA
 37.9°N 121.92°W (Elev. 1900 ft)
2:41 pm PDT Mar 22, 2026
4pm PDT Mar 22, 2026-6pm PDT Mar 29, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database