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

BLACK DIAMOND (PIBC1)

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

NA

43°F

6°C

Humidity 100%
Wind Speed N 19 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Wind Chill35°F (2°C)
Last update 01 Jan 12:28 AM PST
Extended Forecast for

Brentwood CA

  • Overnight

    Overnight: Rain.  Steady temperature around 50. East southeast wind around 7 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Rain

  • New Year's Day

    New Year's Day: Rain likely, mainly before 10am.  Mostly cloudy, with a high near 59. Southeast wind 10 to 14 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 59 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of rain, mainly before 10pm.  Mostly cloudy, with a low around 48. South southeast wind around 6 mph.

    Low: 48 °F

    Chance Rain

  • Friday

    Friday: A 30 percent chance of rain, mainly after 4pm.  Mostly cloudy, with a high near 58. Southeast wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 58 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain, mainly after 10pm.  Low around 55. Breezy, with a southeast wind 16 to 22 mph, with gusts as high as 30 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Rain and
    Breezy

  • Saturday

    Saturday: Rain before 10am, then showers and possibly a thunderstorm after 10am.  High near 58. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm.  Low around 52. Chance of precipitation is 90%.

    Low: 52 °F

    Showers

  • Sunday

    Sunday: Rain.  Cloudy, with a high near 56.

    High: 56 °F

    Rain

  • Sunday Night

    Sunday Night: Rain.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Rain

Detailed Forecast

Overnight
Rain. Steady temperature around 50. East southeast wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
New Year's Day
Rain likely, mainly before 10am. Mostly cloudy, with a high near 59. Southeast wind 10 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 48. South southeast wind around 6 mph.
Friday
A 30 percent chance of rain, mainly after 4pm. Mostly cloudy, with a high near 58. Southeast wind 6 to 10 mph, with gusts as high as 18 mph.
Friday Night
Rain, mainly after 10pm. Low around 55. Breezy, with a southeast wind 16 to 22 mph, with gusts as high as 30 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 after 10am. High near 58. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm. Low around 52. Chance of precipitation is 90%.
Sunday
Rain. Cloudy, with a high near 56.
Sunday Night
Rain. Mostly cloudy, with a low around 48.
Monday
Rain likely. Cloudy, with a high near 54.
Monday Night
Rain likely. Cloudy, with a low around 47.
Tuesday
A chance of rain. Mostly cloudy, with a high near 53.
Tuesday Night
A chance of rain. Partly cloudy, with a low around 43.
Wednesday
A chance of rain. Mostly sunny, with a high near 52.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Brentwood CA
 37.93°N 121.7°W (Elev. 75 ft)
12:26 am PST Jan 1, 2026
12am PST Jan 1, 2026-6pm PST Jan 7, 2026
 
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