Major Winter Storm to Impact the Mid-Atlantic and Northeast; Inclement Weather in the Pacific Northwest

A major winter storm is expected to bring heavy snow, strong winds, and coastal flooding across the Mid-Atlantic and Northeast that may cause impossible travel conditions and power outages. Blizzard conditions are possible along coastal areas from the DelMarVa Peninsula through southeastern New England. Wet weather and strong winds return to the Pacific Northwest and north-central California. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

28°F

-2°C

Humidity	99%
Wind Speed	N 0 MPH
Barometer	NA
Dewpoint	28°F (-2°C)
Visibility	NA
Last update	20 Feb 03:25 AM PST

More Information:

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

Extended Forecast for

Clayton CA

Overnight
Low: 48 °F
Mostly Cloudy
Monday
High: 65 °F
Partly Sunny
Monday Night
Low: 54 °F
Chance Rain
Tuesday
High: 60 °F
Rain
Tuesday Night
Low: 54 °F
Rain then
Chance Rain
Wednesday
High: 63 °F
Slight Chance
Rain then
Partly Sunny
Wednesday Night
Low: 49 °F
Partly Cloudy
Thursday
High: 64 °F
Partly Sunny
Thursday Night
Low: 50 °F
Mostly Cloudy

Detailed Forecast

Overnight

Mostly cloudy, with a steady temperature around 48. Calm wind.

Monday

Partly sunny, with a high near 65. Calm wind becoming south southwest around 6 mph in the afternoon.

Monday Night

A 50 percent chance of rain, mainly after 10pm. Cloudy, with a low around 54. South wind 5 to 7 mph. New precipitation amounts of less than a tenth of an inch possible.

Tuesday

Rain, mainly after 10am. High near 60. South wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Tuesday Night

Rain, mainly before 10pm. Low around 54. South southwest wind 6 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday

A 20 percent chance of rain before 10am. Partly sunny, with a high near 63.

Wednesday Night

Partly cloudy, with a low around 49.

Thursday

Partly sunny, with a high near 64.

Thursday Night

Mostly cloudy, with a low around 50.

Friday

Partly sunny, with a high near 66.

Friday Night

Mostly cloudy, with a low around 52.