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

Extreme Fire Weather Concerns for the Western U.S.; Severe Weather and Flooding Threats for the Central U.S.

Extremely critical fire weather conditions are expected to develop across the Great Basin and Southwest today, and exceptionally dry and windy conditions will promote rapid wildfire spread through the weekend. Scattered severe thunderstorms and heavy rain are possible across parts of the Ozark Plateau into lower Ohio Valley and parts of the northern Rockies into adjacent Great Plains. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

N/A

Humidity 28%
Wind Speed NW 9 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update 17 May 05:05 PM PDT
Extended Forecast for

4 Miles ENE San Ramon CA

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 72. West southwest wind 10 to 15 mph, with gusts as high as 29 mph.

    High: 72 °F

    Gradual
    Clearing

  • Tonight

    Tonight: Increasing clouds, with a low around 55. West southwest wind 9 to 13 mph, with gusts as high as 29 mph.

    Low: 55 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 68. West southwest wind 10 to 14 mph, with gusts as high as 28 mph.

    High: 68 °F

    Gradual
    Clearing

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 49. West southwest wind 8 to 13 mph becoming light southwest after midnight. Winds could gust as high as 28 mph.

    Low: 49 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 72. West southwest wind 10 to 15 mph, with gusts as high as 29 mph.
Tonight
Increasing clouds, with a low around 55. West southwest wind 9 to 13 mph, with gusts as high as 29 mph.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 68. West southwest wind 10 to 14 mph, with gusts as high as 28 mph.
Saturday Night
Mostly clear, with a low around 49. West southwest wind 8 to 13 mph becoming light southwest after midnight. Winds could gust as high as 28 mph.
Sunday
Sunny, with a high near 79. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Mostly sunny, with a high near 74.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE San Ramon CA
 37.79°N 121.9°W (Elev. 725 ft)
Last Update:
1:26 am PDT Jun 26, 2026
Forecast Valid:
6am PDT Jun 26, 2026-6pm PDT Jul 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation