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

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. 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 15%
Wind Speed NE 1 MPH
Barometer NA
Dewpoint 6°F (-14°C)
Visibility NA
Last update 10 Jan 04:50 PM PST
Extended Forecast for

6 Miles ENE San Ramon CA

  • Tonight

    Tonight: Patchy frost after 1am. Otherwise, mostly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Cloudy
    then Patchy
    Frost

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, mostly sunny, with a high near 58. Calm wind becoming north northeast around 5 mph.

    High: 58 °F

    Areas Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: Patchy frost before 8am. Otherwise, sunny, with a high near 57. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 57 °F

    Patchy Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Wednesday Night

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

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy frost after 1am. Otherwise, mostly cloudy, with a low around 35. Calm wind.
Sunday
Areas of frost before 9am. Otherwise, mostly sunny, with a high near 58. Calm wind becoming north northeast around 5 mph.
Sunday Night
Partly cloudy, with a low around 37. Calm wind.
Monday
Patchy frost before 8am. Otherwise, sunny, with a high near 57. Calm wind becoming northeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 38. Calm wind.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 61.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Sunny, with a high near 62.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 43.
Saturday
Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ENE San Ramon CA
 37.79°N 121.87°W (Elev. 801 ft)
Last Update:
2:45 pm PST Jan 10, 2026
Forecast Valid:
5pm PST Jan 10, 2026-6pm PST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

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