Another Round of Heavy Rain and Mountain Snow in California; Snow in the Great Lakes and Northeast

Another round of heavy rainfall will renew concerns for additional flash flooding and landslides in southern California around burn scars and coastal mountain ranges. A low pressure system is bringing enhanced snowfall downwind from the lower Great Lakes into the Northeast mountain ranges. Above average temperatures will challenge or break daily record high temperatures across the southern Plains. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

43°F

6°C

Humidity	100%
Wind Speed	S 24 MPH
Barometer	NA
Dewpoint	43°F (6°C)
Visibility	NA
Wind Chill	34°F (1°C)
Last update	16 Nov 10:20 PM PST

More Information:

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

Extended Forecast for

3 Miles NNE San Ramon CA

Tonight
Low: 48 °F
Showers and
Patchy Fog
Monday
High: 58 °F
Rain Likely
Monday Night
Low: 44 °F
Slight Chance
Rain then
Mostly Cloudy
Tuesday
High: 60 °F
Mostly Sunny
Tuesday Night
Low: 43 °F
Mostly Clear
Wednesday
High: 60 °F
Mostly Sunny
Wednesday Night
Low: 47 °F
Slight Chance
Rain
Thursday
High: 59 °F
Chance Rain
Thursday Night
Low: 43 °F
Slight Chance
Rain then
Mostly Cloudy

Detailed Forecast

Tonight

Showers and possibly a thunderstorm. Patchy fog between midnight and 3am. Low around 48. South southeast wind 9 to 13 mph becoming southwest after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

Rain likely, mainly before 4pm. Mostly cloudy, with a high near 58. West wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday Night

A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 44. Light and variable wind. New precipitation amounts of less than a tenth of an inch possible.

Tuesday

Mostly sunny, with a high near 60. Northwest wind 3 to 6 mph.

Tuesday Night

Mostly clear, with a low around 43. Calm wind.

Wednesday

Mostly sunny, with a high near 60.

Wednesday Night

A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 47.

Thursday

A chance of rain, mainly before 4pm. Mostly cloudy, with a high near 59.

Thursday Night

A slight chance of rain before 10pm. Mostly cloudy, with a low around 43.