Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Flood Watch until December 26, 10:00 PM PST

Current conditions at

LAS TRAMPAS (LTRC1)

Lat: 37.83389°NLon: 122.06694°WElev: 1760.0ft.

45°F

7°C

Humidity	94%
Wind Speed	SW 24 MPH
Barometer	NA
Dewpoint	43°F (6°C)
Visibility	NA
Wind Chill	36°F (2°C)
Last update	26 Dec 03:28 AM PST

More Information:

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

Extended Forecast for

3 Miles WSW San Ramon CA

Flood Watch December 26, 04:34am until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 26, 04:34am until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
Today
High: 49 °F
Chance
Showers
Tonight
Low: 42 °F
Slight Chance
Showers
Saturday
High: 48 °F
Mostly Sunny
Saturday Night
Low: 35 °F
Increasing
Clouds
Sunday
High: 48 °F
Areas Frost
then Sunny
Sunday Night
Low: 34 °F
Clear then
Patchy Frost
Monday
High: 50 °F
Areas Frost
then Sunny
Monday Night
Low: 34 °F
Clear then
Areas Frost

Detailed Forecast

Today

A 50 percent chance of showers, mainly between 8am and 5pm. Partly sunny, with a steady temperature around 49. South wind 11 to 18 mph, with gusts as high as 30 mph. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight

A 20 percent chance of showers between 2am and 3am. Mostly cloudy, with a low around 42. Southwest wind 7 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday

Mostly sunny, with a high near 48. West wind around 6 mph becoming north in the afternoon.

Saturday Night

Increasing clouds, with a low around 35. North wind around 6 mph.

Sunday

Areas of frost between 7am and 8am. Otherwise, sunny, with a high near 48. North northeast wind around 6 mph.

Sunday Night

Patchy frost after 1am. Otherwise, mostly clear, with a low around 34.

Monday

Areas of frost before 9am. Otherwise, sunny, with a high near 50.

Monday Night

Areas of frost after 3am. Otherwise, mostly clear, with a low around 34.