Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Northeast; Heavy Rain Returns to California

An Alberta clipper will bring lake effect snow downwind of the Great Lakes, with the highest snow totals downwind of Lakes Erie and Ontario. Snow squalls may impact New Year's Eve travel during the evening and overnight hours across parts of the Great Lakes, Ohio Valley, and Northeast. Heavy rain will bring a flash flooding threat for southern California on New Year's Eve into New Year's Day. Read More >

Current conditions at

LAS TRAMPAS (LTRC1)

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

40°F

4°C

Humidity	98%
Wind Speed	ENE 13 MPH
Barometer	NA
Dewpoint	39°F (4°C)
Visibility	NA
Wind Chill	32°F (0°C)
Last update	30 Dec 05:28 PM PST

More Information:

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

Extended Forecast for

3 Miles WSW San Ramon CA

Tonight
Low: 43 °F
Mostly Cloudy
then Slight
Chance Rain
Wednesday
High: 50 °F
Rain
Wednesday Night
Low: 46 °F
Rain
New Year's Day
High: 55 °F
Rain
Thursday Night
Low: 52 °F
Rain
Friday
High: 56 °F
Rain and
Breezy
Friday Night
Low: 48 °F
Rain
Saturday
High: 52 °F
Rain
Saturday Night
Low: 45 °F
Rain Likely

Detailed Forecast

Tonight

A 10 percent chance of rain after 4am. Cloudy, with a low around 43. East wind around 8 mph.

Wednesday

Rain, mainly after 10am. High near 50. East wind 6 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Low around 46. East wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. High near 55. South wind 7 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

Thursday Night

Rain. Low around 52. South wind 8 to 10 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday

Rain. High near 56. Breezy. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday Night

Rain. Low around 48. Chance of precipitation is 90%.

Saturday

Rain. Mostly cloudy, with a high near 52.

Saturday Night

Rain likely. Cloudy, with a low around 45.

Sunday

Rain likely, mainly before 10am. Mostly cloudy, with a high near 52.

Sunday Night

Rain likely. Mostly cloudy, with a low around 44.