Severe Thunderstorms and Heavy Rainfall in the Ohio Valley and Great Lakes; Winter Weather in the Northern Tier

A slow moving front extending from the Great Lakes region into the Plains will bring snow, wintry mix, and ice accumulation north of the front from the Upper Midwest into New England, and severe weather and heavy rain south of the front. Scattered severe thunderstorms with damaging gusts, severe hail, and heavy rain are expected across parts of the Great Lakes/Midwest through tonight. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

45°F

7°C

Humidity 99%
Wind Speed SSW 10 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 31 Mar 11:30 PM PDT
Extended Forecast for

6 Miles NE San Ramon CA

  • Overnight

    Overnight: A 20 percent chance of rain before 4am.  Mostly cloudy, with a low around 49. Southwest wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 49 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 2pm.  Mostly cloudy, with a high near 56. Breezy, with a south southwest wind 13 to 23 mph, with gusts as high as 33 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Rain Likely
    and Breezy

  • Wednesday Night

    Wednesday Night: Rain, mainly before 1am.  Low around 43. Breezy, with a southwest wind 15 to 23 mph, with gusts as high as 34 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 58. North northwest wind 14 to 20 mph, with gusts as high as 28 mph.

    High: 58 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 46. North northwest wind 11 to 18 mph, with gusts as high as 32 mph.

    Low: 46 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 67. Breezy.

    High: 67 °F

    Sunny and
    Breezy then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of rain before 4am. Mostly cloudy, with a low around 49. Southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Wednesday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 56. Breezy, with a south southwest wind 13 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain, mainly before 1am. Low around 43. Breezy, with a southwest wind 15 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Sunny, with a high near 58. North northwest wind 14 to 20 mph, with gusts as high as 28 mph.
Thursday Night
Clear, with a low around 46. North northwest wind 11 to 18 mph, with gusts as high as 32 mph.
Friday
Sunny, with a high near 67. Breezy.
Friday Night
Mostly clear, with a low around 50.
Saturday
Sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NE San Ramon CA
 37.83°N 121.88°W (Elev. 1913 ft)
11:26 pm PDT Mar 31, 2026
12am PDT Apr 1, 2026-6pm PDT Apr 7, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database