Pacific Storm System Moves Inland; Strong Storm in Alaska

A Pacific storm system will bring low elevation/valley rain and mountain snow as it moves inland to the central Great Basin through the central Rockies through Thursday. Scattered thunderstorms are likely from California into the Great Basin. A large low pressure system continues to bring snow, blizzard conditions, damaging winds, and mixed precipitation along the Bering Sea and Southwest Alaska. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

41°F

5°C

Humidity	99%
Wind Speed	S 11 MPH
Barometer	NA
Dewpoint	41°F (5°C)
Visibility	NA
Wind Chill	34°F (1°C)
Last update	11 Feb 02:35 PM PST

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: 48 °F
Showers
Tonight
Low: 47 °F
Rain Likely
Thursday
High: 52 °F
Mostly Sunny
Thursday Night
Low: 45 °F
Mostly Clear
Friday
High: 59 °F
Mostly Sunny
Friday Night
Low: 47 °F
Mostly Cloudy
Saturday
High: 56 °F
Mostly Cloudy
then Slight
Chance Rain
Saturday Night
Low: 48 °F
Chance Rain
Sunday
High: 54 °F
Rain Likely

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm, mainly before 4pm, then rain likely and possibly a thunderstorm after 4pm. High near 48. South wind around 18 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Rain likely, mainly before 7pm. Mostly cloudy, with a steady temperature around 47. South southeast wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday

Mostly sunny, with a high near 52. East wind 6 to 9 mph becoming north in the afternoon.

Thursday Night

Mostly clear, with a low around 45. West southwest wind around 9 mph.

Friday

Mostly sunny, with a high near 59. West northwest wind around 7 mph.

Friday Night

Mostly cloudy, with a low around 47.

Saturday

A 10 percent chance of rain after 4pm. Mostly cloudy, with a high near 56.

Saturday Night

A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 48.