Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

41°F

5°C

Humidity 99%
Wind Speed SSW 6 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 21 Apr 01:20 AM PDT
Extended Forecast for

4 Miles S Clayton CA

  • Overnight

    Overnight: Rain, mainly before 5am, then showers after 5am.  Low around 49. South wind around 9 mph, with gusts as high as 21 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Rain

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then rain likely and possibly a thunderstorm after 5pm.  High near 59. Southwest wind 8 to 14 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: 59 °F

    Showers

  • Tuesday Night

    Tuesday Night: A chance of rain before 11pm, then a chance of rain after 2am.  Mostly cloudy, with a low around 44. Southwest wind 10 to 13 mph, with gusts as high as 24 mph.  Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 44 °F

    Chance Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly before 11am.  Mostly sunny, with a high near 62. South southwest wind 7 to 9 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. West wind 7 to 9 mph.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Friday Night

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

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Overnight
Rain, mainly before 5am, then showers after 5am. Low around 49. South wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then rain likely and possibly a thunderstorm after 5pm. High near 59. Southwest wind 8 to 14 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
A chance of rain before 11pm, then a chance of rain after 2am. Mostly cloudy, with a low around 44. Southwest wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A 30 percent chance of rain, mainly before 11am. Mostly sunny, with a high near 62. South southwest wind 7 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly clear, with a low around 41. West wind 7 to 9 mph.
Thursday
Sunny, with a high near 68.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Partly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 67.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Clayton CA
 37.87°N 121.95°W (Elev. 1509 ft)
12:31 am PDT Apr 21, 2026
3am PDT Apr 21, 2026-6pm PDT Apr 27, 2026
 
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Additional Resources

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