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.

40°F

4°C

Humidity	99%
Wind Speed	S 15 MPH
Barometer	NA
Dewpoint	40°F (4°C)
Visibility	NA
Wind Chill	32°F (0°C)
Last update	14 Feb 07:55 PM PST

More Information:

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

Extended Forecast for

4 Miles SSE Clayton CA

Tonight
Low: 44 °F
Chance Rain
Sunday
High: 52 °F
Chance Rain
then Rain and
Breezy
Sunday Night
Low: 47 °F
Rain
Washington's Birthday
High: 48 °F
Rain
Monday Night
Low: 44 °F
Rain then
Rain/Snow and
Breezy
Tuesday
High: 49 °F
Rain/Snow and
Breezy
Tuesday Night
Low: 40 °F
Rain/Snow
then Snow
Likely
Wednesday
High: 47 °F
Snow Likely
then
Rain/Snow
Likely
Wednesday Night
Low: 40 °F
Rain/Snow
Likely

Detailed Forecast

Tonight

A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 44. South southeast wind 14 to 18 mph, with gusts as high as 28 mph.

Sunday

Rain, mainly after 1pm. High near 52. Breezy, with a south wind 16 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night

Rain. Steady temperature around 47. South wind 10 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

Washington's Birthday

Rain. High near 48. East wind around 14 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

Monday Night

Rain before 1am, then rain and snow. Low around 44. Breezy, with a west wind 18 to 22 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Tuesday

Rain, possibly mixed with snow. High near 49. Breezy. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday Night

Rain and snow, becoming all snow after 7pm. Low around 40. Chance of precipitation is 90%. Little or no snow accumulation expected.

Wednesday

Snow likely before 1pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a high near 47.

Wednesday Night

Rain and snow likely before 1am, then a chance of snow. Mostly cloudy, with a low around 40.

Thursday

A chance of snow before 1pm, then a chance of rain and snow. Partly sunny, with a high near 47.

Thursday Night

A chance of rain and snow. Mostly cloudy, with a low around 39.