Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Current conditions at

LAS TRAMPAS (LTRC1)

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

45°F

7°C

Humidity	100%
Wind Speed	SE 10 MPH
Barometer	NA
Dewpoint	45°F (7°C)
Visibility	NA
Wind Chill	40°F (4°C)
Last update	31 Dec 11:28 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

Overnight
Low: 46 °F
Rain
New Year's Day
High: 55 °F
Rain
Thursday Night
Low: 47 °F
Rain Likely
then Slight
Chance Rain
Friday
High: 56 °F
Rain Likely
Friday Night
Low: 52 °F
Rain
Saturday
High: 56 °F
Showers
Saturday Night
Low: 50 °F
Showers
Sunday
High: 53 °F
Rain
Sunday Night
Low: 46 °F
Rain

Detailed Forecast

Overnight

Rain. Low around 46. East wind around 9 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

New Year's Day

Rain, mainly before 4pm. High near 55. South wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Rain likely, mainly before 7pm. Mostly cloudy, with a low around 47. South southeast wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Friday

Rain likely, mainly after 4pm. Mostly cloudy, with a high near 56. South wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

Rain. Low around 52. South wind 14 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Saturday

Rain before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then rain after 1pm. High near 56. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night

Showers and possibly a thunderstorm. Low around 50. Chance of precipitation is 90%.

Sunday

Rain. Cloudy, with a high near 53.

Sunday Night

Rain. Mostly cloudy, with a low around 46.

Monday

Rain likely. Mostly cloudy, with a high near 52.

Monday Night

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

Tuesday

A chance of rain. Partly sunny, with a high near 52.