Heavy Rain in the Southern U.S.; Active Weather Continues in Alaska

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains today, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. Another Bering system will impact the Alaskan West Coast and Central Interior through the weekend bringing moderate to heavy snow, high winds, and/or some blizzard conditions. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

45°F

7°C

Humidity	67%
Wind Speed	SSE 9 MPH
Barometer	NA
Dewpoint	35°F (2°C)
Visibility	NA
Wind Chill	40°F (4°C)
Last update	14 Feb 12:05 AM PST

More Information:

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

Extended Forecast for

4 Miles SSE Clayton CA

Overnight
Low: 46 °F
Mostly Cloudy
Saturday
High: 48 °F
Mostly Cloudy
Saturday Night
Low: 47 °F
Decreasing
Clouds
Sunday
High: 52 °F
Mostly Cloudy
then Slight
Chance Rain
Sunday Night
Low: 47 °F
Rain
Washington's Birthday
High: 52 °F
Rain
Monday Night
Low: 44 °F
Rain and
Breezy
Tuesday
High: 48 °F
Rain/Snow and
Windy
Tuesday Night
Low: 41 °F
Rain/Snow and
Breezy

Detailed Forecast

Overnight

Mostly cloudy, with a low around 46. South wind 8 to 10 mph, with gusts as high as 18 mph.

Saturday

Mostly cloudy, with a steady temperature around 48. South wind 5 to 9 mph.

Saturday Night

Cloudy, then gradually becoming partly cloudy, with a steady temperature around 47. South wind 14 to 16 mph, with gusts as high as 29 mph.

Sunday

A 20 percent chance of rain after 1pm. Mostly cloudy, with a high near 52. South wind 15 to 17 mph, with gusts as high as 28 mph. New precipitation amounts between a quarter and half of an inch possible.

Sunday Night

Rain, mainly after 7pm. Low around 47. South southeast wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

Washington's Birthday

Rain. High near 52. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

Monday Night

Rain. Low around 44. Breezy. Chance of precipitation is 90%.

Tuesday

Rain before 10am, then rain, possibly mixed with snow. Cloudy, with a high near 48. Windy.

Tuesday Night

Rain and snow, becoming all snow after 1am. Mostly cloudy, with a low around 41. Breezy.

Wednesday

Snow likely before 4pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a high near 47.

Wednesday Night

Rain and snow likely. Mostly cloudy, with a low around 39.