Tracking Late Season Winter Storms; Unusual Early-Season Heat Wave in the Southwest

Heavy snow and high winds continue in the Great Lakes and Northeast. A moderate atmospheric river will continue to bring heavy precipitation to the Pacific Northwest and northern Rockies. A major winter storm will develop across the northern High Plains tonight into Saturday and rapidly strengthen as it moves into the Great Lakes on Sunday. Above-average temperatures expected in the Southwest. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

68°F

20°C

Humidity 17%
Wind Speed WNW 0 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 13 Mar 11:35 AM PDT
Extended Forecast for

6 Miles ENE San Ramon CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 76. West wind 3 to 7 mph.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 46. West wind around 6 mph.

    Low: 46 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 78. West wind 3 to 8 mph.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50. West wind 3 to 6 mph.

    Low: 50 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 83. Northwest wind 3 to 8 mph.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 76. West wind 3 to 7 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 46. West wind around 6 mph.
Saturday
Sunny, with a high near 78. West wind 3 to 8 mph.
Saturday Night
Partly cloudy, with a low around 50. West wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 83. Northwest wind 3 to 8 mph.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Sunny, with a high near 87.
Monday Night
Clear, with a low around 58.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Clear, with a low around 59.
Wednesday
Sunny, with a high near 92.
Wednesday Night
Clear, with a low around 58.
Thursday
Sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ENE San Ramon CA
 37.79°N 121.87°W (Elev. 801 ft)
1:54 pm PDT Mar 13, 2026
1pm PDT Mar 13, 2026-6pm PDT Mar 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

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