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

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

49°F

9°C

Humidity 57%
Wind Speed NNW 12 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 05 Dec 11:20 AM PST
Extended Forecast for

3 Miles NNE San Ramon CA

  • Today

    Today: Sunny, with a high near 61. Northwest wind 5 to 7 mph.

    High: 61 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 40. Calm wind becoming north northwest around 5 mph after midnight.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62. Light north northwest wind becoming northwest 5 to 9 mph in the morning.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42. North northeast wind around 7 mph.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 64. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 64 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 64.

    High: 64 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Sunny, with a high near 61. Northwest wind 5 to 7 mph.
Tonight
Mostly clear, with a low around 40. Calm wind becoming north northwest around 5 mph after midnight.
Saturday
Sunny, with a high near 62. Light north northwest wind becoming northwest 5 to 9 mph in the morning.
Saturday Night
Mostly clear, with a low around 42. North northeast wind around 7 mph.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 64. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 64.
Monday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 43.
Tuesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 64.
Tuesday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 45.
Wednesday
Areas of fog. Otherwise, mostly sunny, with a high near 66.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 45.
Thursday
Areas of fog. Otherwise, mostly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE San Ramon CA
 37.8°N 121.93°W (Elev. 640 ft)
Last Update:
1:40 am PST Dec 5, 2025
Forecast Valid:
11am PST Dec 5, 2025-6pm PST Dec 11, 2025
 
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Additional Resources

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Chance of Precipitation