Winter Storm Bringing Widespread Hazardous Weather to the Eastern U.S.

A rapidly-intensifying winter storm continues to bring heavy snow, high winds, and blizzard conditions over the Upper Midwest and Great Lakes through today. An Arctic front will lead in a period of gusty to high winds and sharply colder temperatures over the entire eastern U.S. Heavy lake effect snow is then expected from Lakes Erie and Ontario through New Year's Day. Read More >

Hazardous Weather Conditions

Cold Weather Advisory in effect from December 30, 01:00 AM PST until December 30, 09:00 AM PST

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

47°F

8°C

Humidity	30%
Wind Speed	N 10 MPH
Barometer	NA
Dewpoint	17°F (-8°C)
Visibility	NA
Wind Chill	42°F (6°C)
Last update	29 Dec 11:35 AM PST

More Information:

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

Extended Forecast for

4 Miles SSE Clayton CA

Cold Weather Advisory December 30, 01:00am until December 30, 09:00am

Click here for hazard details and duration

Cold Weather Advisory

Today
High: 49 °F
Sunny
Tonight
Low: 47 °F
Mostly Clear
Tuesday
High: 52 °F
Mostly Sunny
Tuesday Night
Low: 44 °F
Mostly Cloudy
Wednesday
High: 49 °F
Rain Likely
Wednesday Night
Low: 45 °F
Rain
New Year's Day
High: 52 °F
Rain
Thursday Night
Low: 49 °F
Rain Likely
Friday
High: 53 °F
Rain Likely

Detailed Forecast

Today

Sunny, with a steady temperature around 49. North northeast wind 6 to 8 mph.

Tonight

Mostly clear, with a steady temperature around 47. East northeast wind 3 to 6 mph.

Tuesday

Mostly sunny, with a high near 52. East northeast wind 5 to 9 mph.

Tuesday Night

Mostly cloudy, with a low around 44. East wind around 7 mph.

Wednesday

Rain likely, mainly after 4pm. Mostly cloudy, with a high near 49. East northeast wind 8 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Low around 45. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. High near 52. Chance of precipitation is 80%.

Thursday Night

Rain likely. Mostly cloudy, with a low around 49.

Friday

Rain likely. Mostly cloudy, with a high near 53.

Friday Night

Rain likely. Mostly cloudy, with a low around 48.

Saturday

Rain likely. Mostly cloudy, with a high near 52.