Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

37°F

3°C

Humidity	100%
Wind Speed	SSW 14 MPH
Barometer	NA
Dewpoint	37°F (3°C)
Visibility	NA
Wind Chill	28°F (-2°C)
Last update	12 Apr 08:20 AM PDT

More Information:

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

Extended Forecast for

4 Miles SSE Clayton CA

This Afternoon
High: 45 °F
Showers and
Breezy
Tonight
Low: 42 °F
Chance
Showers
Monday
High: 52 °F
Mostly Sunny
Monday Night
Low: 45 °F
Mostly Clear
Tuesday
High: 54 °F
Sunny
Tuesday Night
Low: 46 °F
Mostly Clear
Wednesday
High: 56 °F
Mostly Sunny
Wednesday Night
Low: 47 °F
Partly Cloudy
Thursday
High: 57 °F
Sunny

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 45. Breezy, with a southwest wind 18 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

A 50 percent chance of showers between midnight and 4am. Mostly cloudy, with a low around 42. West southwest wind 6 to 15 mph, with gusts as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.

Monday

Mostly sunny, with a high near 52. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

Monday Night

Mostly clear, with a low around 45. Southwest wind 11 to 13 mph, with gusts as high as 23 mph.

Tuesday

Sunny, with a high near 54. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.

Tuesday Night

Mostly clear, with a low around 46.

Wednesday

Mostly sunny, with a high near 56.

Wednesday Night

Partly cloudy, with a low around 47.