Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

52°F

11°C

Humidity	100%
Wind Speed	SE 1 MPH
Barometer	NA
Dewpoint	52°F (11°C)
Visibility	NA
Last update	10 Apr 09:28 PM PDT

More Information:

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

Extended Forecast for

Brentwood CA

Tonight
Low: 52 °F
Chance Rain
Saturday
High: 66 °F
Showers
Likely
Saturday Night
Low: 49 °F
Showers
Sunday
High: 59 °F
Showers
Sunday Night
Low: 46 °F
Chance Rain
then Partly
Cloudy
Monday
High: 65 °F
Mostly Sunny
Monday Night
Low: 46 °F
Mostly Clear
Tuesday
High: 69 °F
Sunny
Tuesday Night
Low: 46 °F
Mostly Clear

Detailed Forecast

Tonight

A 50 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 52. South wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday

Rain likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Increasing clouds, with a high near 66. South wind 6 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Rain and possibly a thunderstorm before 2am, then showers and possibly a thunderstorm between 2am and 5am, then rain after 5am. Low around 49. South wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Sunday

Rain before 8am, then showers and possibly a thunderstorm after 8am. High near 59. Southwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A 40 percent chance of rain before 11pm. Partly cloudy, with a low around 46. West southwest wind 5 to 10 mph becoming light south southwest after midnight. New precipitation amounts of less than a tenth of an inch possible.

Monday

Mostly sunny, with a high near 65.

Monday Night

Mostly clear, with a low around 46.

Tuesday

Sunny, with a high near 69.

Tuesday Night

Mostly clear, with a low around 46.

Wednesday

Sunny, with a high near 72.

Wednesday Night

Partly cloudy, with a low around 49.