Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

52°F

11°C

Humidity 43%
Wind Speed S 9 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 19 Apr 06:10 AM PDT
Extended Forecast for

3 Miles SSE Clayton CA

  • Today

    Today: Mostly sunny, with a high near 65. Southwest wind 11 to 18 mph, with gusts as high as 23 mph.

    High: 65 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 50. Breezy, with a south southwest wind 18 to 23 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 29 mph.

    Low: 50 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: A 50 percent chance of rain, mainly after 11am.  Partly sunny, with a high near 62. South wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 25 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Chance Rain

  • Monday Night

    Monday Night: Rain.  Low around 51. Breezy, with a west southwest wind 18 to 23 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 51 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain before 11am, then showers and possibly a thunderstorm, mainly after 11am.  High near 54. South southwest wind 8 to 13 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 54 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then rain likely, mainly between 8pm and 11pm.  Mostly cloudy, with a low around 49. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Showers
    Likely then
    Chance Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain.  Mostly sunny, with a high near 56.

    High: 56 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 65. Southwest wind 11 to 18 mph, with gusts as high as 23 mph.
Tonight
Partly cloudy, with a low around 50. Breezy, with a south southwest wind 18 to 23 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 29 mph.
Monday
A 50 percent chance of rain, mainly after 11am. Partly sunny, with a high near 62. South wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Rain. Low around 51. Breezy, with a west southwest wind 18 to 23 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Rain before 11am, then showers and possibly a thunderstorm, mainly after 11am. High near 54. South southwest wind 8 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then rain likely, mainly between 8pm and 11pm. Mostly cloudy, with a low around 49. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 30 percent chance of rain. Mostly sunny, with a high near 56.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Sunny, with a high near 65.
Friday Night
Mostly clear, with a low around 51.
Saturday
Mostly sunny, with a high near 64.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
8:38 am PDT Apr 19, 2026
10am PDT Apr 19, 2026-6pm PDT Apr 25, 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