Fire Weather Concerns for the Plains; Thunderstorms in the Southeast; Record Warmth Spreads in the Southwest

Elevated to locally critical conditions will persist across the High Plains. Showers and scattered thunderstorms are expected over parts of the Southeast and Florida Peninsula. Clipper system will bring modest snowfall and strong winds from the Northern High Plains into the Upper Midwest this weekend. Record warmth will persist across the Southwest into the southern Plains. 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

  • Overnight

    Overnight: Partly cloudy, with a low around 53. Northwest wind around 5 mph.

    Low: 53 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 67. North northeast wind around 7 mph.

    High: 67 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57. North wind around 5 mph.

    Low: 57 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69. East wind around 6 mph becoming west northwest in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 52. West southwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Monday Night

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

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 53. Northwest wind around 5 mph.
Friday
Mostly sunny, with a high near 67. North northeast wind around 7 mph.
Friday Night
Mostly cloudy, with a low around 57. North wind around 5 mph.
Saturday
Mostly sunny, with a high near 69. East wind around 6 mph becoming west northwest in the afternoon.
Saturday Night
Mostly cloudy, with a low around 52. West southwest wind around 11 mph, with gusts as high as 20 mph.
Sunday
Mostly cloudy, with a high near 60.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 59.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 61.
Tuesday Night
Mostly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
1:59 am PST Feb 27, 2026
3am PST Feb 27, 2026-6pm PST Mar 5, 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