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 13 MPH
Barometer	NA
Dewpoint	37°F (3°C)
Visibility	NA
Wind Chill	29°F (-2°C)
Last update	12 Apr 01:30 PM PDT

More Information:

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

Extended Forecast for

Clayton CA

This Afternoon
High: 54 °F
Showers
Likely
Tonight
Low: 46 °F
Chance
Showers
Monday
High: 60 °F
Mostly Sunny
Monday Night
Low: 48 °F
Mostly Clear
Tuesday
High: 61 °F
Sunny
Tuesday Night
Low: 48 °F
Mostly Clear
Wednesday
High: 63 °F
Mostly Sunny
Wednesday Night
Low: 49 °F
Partly Cloudy
Thursday
High: 64 °F
Sunny

Detailed Forecast

This Afternoon

Showers likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 54. Southwest wind 16 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A 30 percent chance of showers between midnight and 2am. Partly cloudy, with a low around 46. West southwest wind 8 to 13 mph becoming light south after midnight. Winds could gust as high as 22 mph.

Monday

Mostly sunny, with a high near 60. Light west wind becoming west northwest 5 to 9 mph in the morning.

Monday Night

Mostly clear, with a low around 48. Southwest wind around 9 mph.

Tuesday

Sunny, with a high near 61. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 48.

Wednesday

Mostly sunny, with a high near 63.

Wednesday Night

Partly cloudy, with a low around 49.