Inclement Weather in the Pacific Northwest; Severe Thunderstorms in the Southeast; Impending Winter Storm

An approaching storm will bring rain and high elevation snow to Pacific Northwest through the weekend. Isolated severe thunderstorms are possible across parts of the Southeast today into this evening as a low strengthens over the Southeast. This system will form into a winter storm on Sunday that will bring heavy snow, high winds, and coastal flooding to the Mid-Atlantic and Northeast into Monday. Read More >

Hazardous Weather Conditions

Cold Weather Advisory until February 21, 09:00 AM PST

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

4 Miles SSE Clayton CA

Cold Weather Advisory February 21, 08:15am until February 21, 09:00am

Click here for hazard details and duration

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Cold Weather Advisory February 21, 08:15am until February 21, 09:00am
NOW until 9:00am Sat
Cold Weather Advisory
Today
High: 52 °F
Decreasing
Clouds
Tonight
Low: 45 °F
Partly Cloudy
Sunday
High: 58 °F
Mostly Sunny
Sunday Night
Low: 44 °F
Mostly Cloudy
Monday
High: 60 °F
Partly Sunny
Monday Night
Low: 53 °F
Rain Likely
Tuesday
High: 56 °F
Rain
Tuesday Night
Low: 53 °F
Rain

Detailed Forecast

Today

Mostly cloudy, then gradually becoming sunny, with a high near 52. South wind 8 to 11 mph, with gusts as high as 24 mph.

Tonight

Partly cloudy, with a steady temperature around 45. South wind 11 to 13 mph, with gusts as high as 22 mph.

Sunday

Mostly sunny, with a high near 58. South wind 7 to 9 mph, with gusts as high as 18 mph.

Sunday Night

Mostly cloudy, with a low around 44. North northwest wind around 6 mph becoming northeast after midnight.

Monday

Partly sunny, with a high near 60. East northeast wind around 6 mph.

Monday Night

Rain likely, mainly after 4am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Tuesday

Rain. High near 56. Chance of precipitation is 80%.

Tuesday Night

Rain, mainly before 10pm. Cloudy, with a low around 53.

Wednesday

A chance of rain. Mostly cloudy, with a high near 58.

Wednesday Night

A chance of rain. Mostly cloudy, with a low around 48.

Thursday

A slight chance of rain. Partly sunny, with a high near 61.

Thursday Night

A slight chance of rain. Partly cloudy, with a low around 49.