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

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

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 68. West wind 6 to 8 mph.

    High: 68 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 48. West southwest wind around 13 mph, with gusts as high as 23 mph.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a steady temperature around 50. West southwest wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 50 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after 10pm. Partly cloudy, with a low around 48. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 48 °F

    Slight Chance
    Rain

  • Monday

    Monday: Mostly sunny, with a high near 57. Southwest wind around 8 mph becoming west northwest in the afternoon.

    High: 57 °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 59.

    High: 59 °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 59.

    High: 59 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 68. West wind 6 to 8 mph.
Tonight
Mostly cloudy, with a low around 48. West southwest wind around 13 mph, with gusts as high as 23 mph.
Sunday
Partly sunny, with a steady temperature around 50. West southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Sunday Night
A 20 percent chance of rain after 10pm. Partly cloudy, with a low around 48. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 57. Southwest wind around 8 mph becoming west northwest in the afternoon.
Monday Night
Mostly clear, with a low around 47.
Tuesday
Mostly sunny, with a high near 59.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 59.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
Sunny, with a high near 59.
Thursday Night
Clear, with a low around 46.
Friday
Sunny, with a high near 62.
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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:
12:26 pm PST Feb 28, 2026
Forecast Valid:
1pm PST Feb 28, 2026-6pm PST Mar 6, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation