Fire Weather Concerns; Record Warmth Spreads

The Plains to the mid-Mississippi Valley continue with warm and dry conditions. Any fires that initiate could spread quickly. The warm temperatures will expand across the Southern Plains into the Southwest where numerous records are expected through the weekend. Meanwhile, a cold front will move southward across the northern Plains and Great Lakes region where some snow will develop this weekend. 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 99%
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update 20 Feb 03:25 AM PST
Extended Forecast for

4 Miles SSE Clayton CA

  • Today

    Today: Increasing clouds, with a high near 71. Northwest wind 5 to 7 mph becoming east in the afternoon.

    High: 71 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 51. West southwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a steady temperature around 54. West southwest wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 54 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after 10pm.  Partly cloudy, with a low around 48. Southwest wind 9 to 13 mph, with gusts as high as 23 mph.

    Low: 48 °F

    Slight Chance
    Rain

  • Monday

    Monday: Mostly sunny, with a high near 60. West northwest wind 6 to 8 mph.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 71. Northwest wind 5 to 7 mph becoming east in the afternoon.
Tonight
Mostly cloudy, with a low around 51. West southwest wind around 11 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a steady temperature around 54. West southwest wind 8 to 10 mph, with gusts as high as 21 mph.
Sunday Night
A 20 percent chance of rain after 10pm. Partly cloudy, with a low around 48. Southwest wind 9 to 13 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 60. West northwest wind 6 to 8 mph.
Monday Night
Mostly clear, with a low around 47.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
Sunny, with a high near 61.
Thursday Night
Clear, with a low around 47.
Friday
Sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
1:21 am PST Feb 28, 2026
6am PST Feb 28, 2026-6pm PST Mar 6, 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