Inclement Weather in the Pacific Northwest; Severe Thunderstorms in the Southeast; Impending Winter Storm

An approaching storm will bring rain and high elevation snow to Pacific Northwest through the weekend. Isolated severe thunderstorms are possible across parts of the Southeast today into this evening as a low strengthens over the Southeast. This system will form into a winter storm on Sunday that will bring heavy snow, high winds, and coastal flooding to the Mid-Atlantic and Northeast into Monday. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

28°F

-2°C

Humidity 99%
Wind Speed N 0 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 20 Feb 03:25 AM PST
Extended Forecast for

2 Miles SSW Clayton CA

  • Overnight

    Overnight: Partly cloudy, with a low around 44. South wind around 10 mph, with gusts as high as 21 mph.

    Low: 44 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 62. South wind around 7 mph.

    High: 62 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45. Light south southeast wind.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 64. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 64 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of rain after 10pm.  Mostly cloudy, with a low around 54. South wind around 6 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain.  High near 61. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly before 4am.  Low around 55. Chance of precipitation is 90%.

    Low: 55 °F

    Rain then
    Rain Likely

  • Wednesday

    Wednesday: A chance of rain, mainly before 10am.  Mostly cloudy, with a high near 62.

    High: 62 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 10pm.  Mostly cloudy, with a low around 52.

    Low: 52 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 44. South wind around 10 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 62. South wind around 7 mph.
Sunday Night
Partly cloudy, with a low around 45. Light south southeast wind.
Monday
Mostly sunny, with a high near 64. Calm wind becoming northeast around 5 mph in the afternoon.
Monday Night
A 40 percent chance of rain after 10pm. Mostly cloudy, with a low around 54. South wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain. High near 61. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain, mainly before 4am. Low around 55. Chance of precipitation is 90%.
Wednesday
A chance of rain, mainly before 10am. Mostly cloudy, with a high near 62.
Wednesday Night
A slight chance of rain before 10pm. Mostly cloudy, with a low around 52.
Thursday
Partly sunny, with a high near 65.
Thursday Night
Mostly cloudy, with a low around 53.
Friday
Partly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Partly sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Clayton CA
 37.91°N 121.96°W (Elev. 1299 ft)
12:26 am PST Feb 22, 2026
12am PST Feb 22, 2026-6pm PST Feb 28, 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