Extremely Critical Fire Weather in the Central Plains; Active Pattern in the West

Gusty to high winds and low relative humidity will bring critical to extremely critical fire weather conditions to the central and southern Plains today into Wednesday. Use caution with any potential ignition sources. Two Pacific storms will impact the western U.S. into Wednesday with gusty winds, low elevation rain and heavy mountain snow. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

32°F

0°C

Humidity 100%
Wind Speed SW 16 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill21°F (-6°C)
Last update 17 Feb 10:35 AM PST
Extended Forecast for

4 Miles SSE Clayton CA

Flood Advisory until February 17, 01:00pm
Click here for hazard details and duration
Flood Advisory
  •  
    Flood Advisory until February 17, 01:00pm

    NOW until 1:00pm Tue

    Flood Advisory

  • Today

    High: 44 °F

    Showers and
    Breezy

  • Tonight

    Tonight: Rain and snow likely, mainly before midnight.  Mostly cloudy, with a low around 35. West wind 14 to 17 mph, with gusts as high as 31 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of rain and snow before 10am, then rain likely.  Partly sunny, with a high near 45. West southwest wind around 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 45 °F

    Chance
    Rain/Snow
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain.  Low around 40. South southeast wind 11 to 16 mph, with gusts as high as 29 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain

  • Thursday

    Thursday: Rain.  High near 44. Breezy, with a south wind 18 to 22 mph becoming west in the afternoon. Winds could gust as high as 38 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 44 °F

    Rain and
    Breezy then
    Rain Likely

  • Thursday Night

    Thursday Night: A chance of rain before 1am, then a chance of rain and snow.  Partly cloudy, with a low around 34. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Friday

    Friday: A chance of rain and snow before 1pm, then a chance of rain.  Mostly sunny, with a high near 47. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 47 °F

    Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain.  Partly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

Detailed Forecast

Today
Showers and possibly a thunderstorm before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 44. Breezy, with a southwest wind 21 to 26 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Rain and snow likely, mainly before midnight. Mostly cloudy, with a low around 35. West wind 14 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday
A chance of rain and snow before 10am, then rain likely. Partly sunny, with a high near 45. West southwest wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
Rain. Low around 40. South southeast wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain. High near 44. Breezy, with a south wind 18 to 22 mph becoming west in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of rain before 1am, then a chance of rain and snow. Partly cloudy, with a low around 34. Chance of precipitation is 30%. Little or no snow accumulation expected.
Friday
A chance of rain and snow before 1pm, then a chance of rain. Mostly sunny, with a high near 47. Chance of precipitation is 30%. Little or no snow accumulation expected.
Friday Night
A chance of rain. Partly cloudy, with a low around 38.
Saturday
A chance of rain. Partly sunny, with a high near 51.
Saturday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 44.
Sunday
Rain likely. Mostly cloudy, with a high near 56.
Sunday Night
Rain. Cloudy, with a low around 50.
Monday
Rain. Cloudy, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
9:15 am PST Feb 17, 2026
10am PST Feb 17, 2026-6pm PST Feb 23, 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