Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

43°F

6°C

Humidity 99%
Wind Speed SSW 11 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 16 Nov 10:05 AM PST
Extended Forecast for

3 Miles N San Ramon CA

  • Today

    Today: Rain likely, mainly after 4pm.  Mostly cloudy, with a high near 61. South wind around 7 mph, with gusts as high as 18 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Rain Likely

  • Tonight

    Tonight: Rain before 1am, then showers and possibly a thunderstorm between 1am and 4am, then rain and possibly a thunderstorm after 4am.  Low around 48. South southeast wind 9 to 11 mph, with gusts as high as 31 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Showers

  • Monday

    Monday: Rain, mainly before 4pm.  High near 57. South wind 7 to 11 mph, with gusts as high as 22 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Rain

  • Monday Night

    Monday Night: A 20 percent chance of rain before 10pm.  Patchy fog after 9pm.  Otherwise, mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Patchy
    Fog

  • Tuesday

    Tuesday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 58. Light west wind.

    High: 58 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog before 2am, then patchy fog after 5am.  Otherwise, partly cloudy, with a low around 42.

    Low: 42 °F

    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 59.

    High: 59 °F

    Areas Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain after 10pm.  Mostly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A chance of rain, mainly before 4pm.  Partly sunny, with a high near 58.

    High: 58 °F

    Chance Rain

Detailed Forecast

Today
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 61. South wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain before 1am, then showers and possibly a thunderstorm between 1am and 4am, then rain and possibly a thunderstorm after 4am. Low around 48. South southeast wind 9 to 11 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Rain, mainly before 4pm. High near 57. South wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A 20 percent chance of rain before 10pm. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 44. Calm wind.
Tuesday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 58. Light west wind.
Tuesday Night
Patchy fog before 2am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 42.
Wednesday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 59.
Wednesday Night
A slight chance of rain after 10pm. Mostly cloudy, with a low around 46.
Thursday
A chance of rain, mainly before 4pm. Partly sunny, with a high near 58.
Thursday Night
A slight chance of rain before 10pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 43.
Friday
Patchy fog. Otherwise, mostly sunny, with a high near 61.
Friday Night
Patchy fog. Otherwise, partly cloudy, with a low around 42.
Saturday
Patchy fog. Otherwise, sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N San Ramon CA
 37.8°N 121.96°W (Elev. 604 ft)
8:45 am PST Nov 16, 2025
10am PST Nov 16, 2025-6pm PST Nov 22, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database