Winter Returns Across the Northern Tier; Record Warmth for the Southwest

A large high pressure system will usher in cold air for this first day of March across the northern Plains, Great Lakes, Northeast and mid-Atlantic. Some wintry precipitation may evolve across the mid-Mississippi Valley, Ohio Valley and mid-Atlantic through Monday. Meanwhile, record warmth will spread across the Southwest, southern Plains through early this week. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

53°F

12°C

Humidity 71%
Wind Speed N 1 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 01 Mar 01:45 PM PST
Extended Forecast for

4 Miles SSE Clayton CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 55. West southwest wind around 14 mph, with gusts as high as 23 mph.

    High: 55 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 44 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 54. Southwest wind around 8 mph becoming west northwest in the afternoon.

    High: 54 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. West southwest wind around 10 mph, with gusts as high as 18 mph.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58. West wind 7 to 9 mph.

    High: 58 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 55. West southwest wind around 14 mph, with gusts as high as 23 mph.
Tonight
Mostly cloudy, with a low around 44. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 54. Southwest wind around 8 mph becoming west northwest in the afternoon.
Monday Night
Mostly clear, with a low around 47. West southwest wind around 10 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 58. West wind 7 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 58.
Wednesday Night
Clear, with a low around 44.
Thursday
Sunny, with a high near 59.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 47.
Saturday
Sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
12:26 pm PST Mar 1, 2026
2pm PST Mar 1, 2026-6pm PST Mar 7, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database