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

Fire Weather in the Central and Southern Plains; Pacific Storms Impacting the West

Gusty to high winds and low relative humidity will bring elevated to critical fire weather to the central and southern Plains into Wednesday. 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 WSW 12 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill23°F (-5°C)
Last update 17 Feb 02:25 AM PST
Extended Forecast for

4 Miles SSE Clayton CA

  • Overnight

    Overnight: Rain likely, possibly mixed with snow, mainly after 5am. Mostly cloudy, with a steady temperature around 39. West southwest wind 16 to 18 mph, with gusts as high as 39 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 39 °F

    Rain/Snow
    Likely

  • Tuesday

    Tuesday: Rain and snow showers. Some thunder is also possible. Temperature falling to around 37 by 10am. Windy, with a south southwest wind 23 to 32 mph, with gusts as high as 49 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 42 °F⇓

    Rain/Snow and
    Windy

  • Tuesday Night

    Tuesday Night: Snow, mainly before 10pm. Steady temperature around 37. West wind 14 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 37 °F

    Snow then
    Chance Snow

  • Wednesday

    Wednesday: Snow likely before 4pm, then rain and snow likely. Mostly cloudy, with a high near 45. Southwest wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 45 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Snow, possibly mixed with rain. Low around 41. South southeast wind 13 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 41 °F

    Rain/Snow

  • Thursday

    Thursday: Rain and snow. High near 46. Breezy. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 46 °F

    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: A chance of rain and snow before 1am, then a chance of snow. Mostly cloudy, with a low around 37. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 37 °F

    Chance
    Rain/Snow

  • Friday

    Friday: A chance of rain before 10am, then a chance of snow between 10am and 1pm, then a chance of rain and snow after 1pm. Partly sunny, with a high near 46.

    High: 46 °F

    Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance
    Rain/Snow

Detailed Forecast

Overnight
Rain likely, possibly mixed with snow, mainly after 5am. Mostly cloudy, with a steady temperature around 39. West southwest wind 16 to 18 mph, with gusts as high as 39 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Tuesday
Rain and snow showers. Some thunder is also possible. Temperature falling to around 37 by 10am. Windy, with a south southwest wind 23 to 32 mph, with gusts as high as 49 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Tuesday Night
Snow, mainly before 10pm. Steady temperature around 37. West wind 14 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday
Snow likely before 4pm, then rain and snow likely. Mostly cloudy, with a high near 45. Southwest wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday Night
Snow, possibly mixed with rain. Low around 41. South southeast wind 13 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday
Rain and snow. High near 46. Breezy. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
A chance of rain and snow before 1am, then a chance of snow. Mostly cloudy, with a low around 37. Chance of precipitation is 50%. Little or no snow accumulation expected.
Friday
A chance of rain before 10am, then a chance of snow between 10am and 1pm, then a chance of rain and snow after 1pm. Partly sunny, with a high near 46.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 39.
Saturday
A chance of rain and snow before 1pm, then a chance of rain. Partly sunny, with a high near 50.
Saturday Night
Rain likely. Mostly cloudy, with a low around 44.
Sunday
Rain likely. Mostly cloudy, with a high near 54. Breezy.
Sunday Night
Rain. Cloudy, with a low around 50. Breezy.
Monday
Rain. Cloudy, with a high near 54. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
Last Update:
12:27 am PST Feb 17, 2026
Forecast Valid:
2am PST Feb 17, 2026-6pm PST Feb 23, 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