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

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

51°F

11°C

Humidity 45%
Wind Speed N 7 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 29 Nov 12:10 AM PST
Extended Forecast for

3 Miles N San Ramon CA

  • Overnight

    Overnight: Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 62. Calm wind.

    High: 62 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 61. Calm wind.

    High: 61 °F

    Areas Fog
    then Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 40. Calm wind.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 62. Calm wind.
Saturday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 40. Calm wind.
Sunday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 61. Calm wind.
Sunday Night
Partly cloudy, with a low around 40. Calm wind.
Monday
Sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Sunny, with a high near 61.
Thursday Night
Mostly clear, with a low around 41.
Friday
Sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N San Ramon CA
 37.8°N 121.96°W (Elev. 604 ft)
Last Update:
8:39 pm PST Nov 28, 2025
Forecast Valid:
12am PST Nov 29, 2025-6pm PST Dec 5, 2025
 
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