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

60°F

16°C

Humidity 9%
Wind Speed WNW 14 MPH
Barometer NA
Dewpoint 2°F (-17°C)
Visibility NA
Last update 23 Mar 03:05 AM PDT
Extended Forecast for

4 Miles SSE Clayton CA

  • Overnight

    Overnight: Mostly clear, with a low around 58. West wind 11 to 13 mph, with gusts as high as 21 mph.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 71. West wind 8 to 11 mph, with gusts as high as 23 mph.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 57. West wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 57 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. West wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 53. West southwest wind 10 to 13 mph, with gusts as high as 23 mph.

    Low: 53 °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: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 58. West wind 11 to 13 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 71. West wind 8 to 11 mph, with gusts as high as 23 mph.
Monday Night
Clear, with a low around 57. West wind 9 to 14 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 73. West wind 6 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Clear, with a low around 53. West southwest wind 10 to 13 mph, with gusts as high as 23 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
Mostly cloudy, with a low around 54.
Friday
Partly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
2:26 am PDT Mar 23, 2026
3am PDT Mar 23, 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