Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Current conditions at

Mount Diablo Summit Museum and Trailhead Rooftop (SJS02)

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

74°F

23°C

Humidity	36%
Wind Speed	WSW 6 MPH
Barometer	NA
Dewpoint	45°F (7°C)
Visibility	NA
Last update	01 Aug 05:20 PM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

5 Miles ENE San Ramon CA

Tonight
Low: 56 °F
Increasing
Clouds
Saturday
High: 83 °F
Becoming
Sunny
Saturday Night
Low: 55 °F
Increasing
Clouds
Sunday
High: 79 °F
Becoming
Sunny
Sunday Night
Low: 54 °F
Mostly Clear
Monday
High: 80 °F
Sunny
Monday Night
Low: 53 °F
Mostly Clear
Tuesday
High: 84 °F
Sunny
Tuesday Night
Low: 56 °F
Mostly Clear

Detailed Forecast

Tonight

Increasing clouds, with a low around 56. West southwest wind 5 to 10 mph becoming light and variable in the evening.

Saturday

Mostly cloudy through mid morning, then gradual clearing, with a high near 83. Light west northwest wind becoming west southwest 8 to 13 mph in the morning.

Saturday Night

Increasing clouds, with a low around 55. West southwest wind 5 to 9 mph becoming calm in the evening.

Sunday

Partly sunny, then gradually becoming sunny, with a high near 79. Light and variable wind becoming west southwest 8 to 13 mph in the morning.

Sunday Night

Mostly clear, with a low around 54. West southwest wind 6 to 11 mph becoming light in the evening.

Monday

Sunny, with a high near 80.

Monday Night

Mostly clear, with a low around 53.

Tuesday

Sunny, with a high near 84.