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

BLACK DIAMOND (PIBC1)

Lat: 37.95°NLon: 121.88444°WElev: 1600.0ft.

45°F

7°C

Humidity	62%
Wind Speed	NNW 9 MPH
Barometer	NA
Dewpoint	33°F (1°C)
Visibility	NA
Wind Chill	40°F (4°C)
Last update	30 Dec 11:28 PM PST

More Information:

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

Extended Forecast for

Brentwood CA

Overnight
Low: 43 °F
Chance Rain
Wednesday
High: 49 °F
Rain
Wednesday Night
Low: 48 °F⇑
Rain
New Year's Day
High: 59 °F
Rain
Thursday Night
Low: 51 °F
Rain Likely
then Chance
Rain
Friday
High: 58 °F
Chance Rain
then Rain
Friday Night
Low: 53 °F
Showers
Saturday
High: 57 °F
Rain
Saturday Night
Low: 50 °F
Rain

Detailed Forecast

Overnight

A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 43. Calm wind.

Wednesday

Rain, mainly after 10am. High near 49. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Temperature rising to around 51 by 5am. East wind around 6 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 59. Southeast wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 51. Southeast wind 6 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Friday

Rain, mainly after 4pm. High near 58. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

Rain before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then rain and possibly a thunderstorm after 4am. Low around 53. Chance of precipitation is 90%.

Saturday

Rain. Cloudy, with a high near 57.

Saturday Night

Rain. Cloudy, with a low around 50.

Sunday

Rain likely. Mostly cloudy, with a high near 55.

Sunday Night

Rain likely. Mostly cloudy, with a low around 48.

Monday

Rain likely. Cloudy, with a high near 53.

Monday Night

A chance of rain. Mostly cloudy, with a low around 46.