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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Current conditions at

Livermore, Livermore Municipal Airport (KLVK)

Lat: 37.69278°NLon: 121.81444°WElev: 397.0ft.

Clear

74°F

23°C

Humidity 41%
Wind Speed SW 10 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 29 Jul 07:53 PM PDT
Extended Forecast for

San Ramon CA

  • Tonight

    Tonight: Mostly clear, with a low around 56. Southwest wind 3 to 8 mph. Winds could gust as high as 20 mph.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. West southwest wind 5 to 9 mph, with gusts as high as 21 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. Southwest wind 3 to 8 mph. Winds could gust as high as 20 mph.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 89. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. West southwest wind 5 to 9 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 56. Southwest wind 3 to 8 mph. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 84. West southwest wind 5 to 9 mph, with gusts as high as 21 mph.
Thursday Night
Mostly clear, with a low around 54. Southwest wind 3 to 8 mph. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 89. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 57. West southwest wind 5 to 9 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 91.
Saturday Night
Clear, with a low around 58.
Sunday
Sunny, with a high near 91.
Sunday Night
Clear, with a low around 58.
Monday
Sunny, with a high near 92.
Monday Night
Clear, with a low around 60.
Tuesday
Sunny, with a high near 91.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Ramon CA
 37.76°N 121.95°W (Elev. 420 ft)
Last Update:
1:25 pm PDT Jul 29, 2026
Forecast Valid:
8pm PDT Jul 29, 2026-6pm PDT Aug 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation