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.

47°F

8°C

Humidity	83%
Wind Speed	S 10 MPH
Barometer	NA
Dewpoint	42°F (6°C)
Visibility	NA
Wind Chill	42°F (6°C)
Last update	11 Apr 11:28 PM PDT

More Information:

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

Extended Forecast for

3 Miles NE Brentwood CA

Overnight
Low: 48 °F
Showers
Likely
Sunday
High: 60 °F
Showers
Likely
Sunday Night
Low: 45 °F
Chance
Showers then
Mostly Clear
Monday
High: 65 °F
Mostly Sunny
Monday Night
Low: 46 °F
Mostly Clear
Tuesday
High: 67 °F
Sunny
Tuesday Night
Low: 45 °F
Mostly Clear
Wednesday
High: 68 °F
Mostly Sunny
Wednesday Night
Low: 49 °F
Partly Cloudy

Detailed Forecast

Overnight

Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 5am, then a chance of showers after 5am. Mostly cloudy, with a low around 48. South southeast wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday

A chance of showers before 8am, then showers likely and possibly a thunderstorm between 8am and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 60. South southeast wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

A 40 percent chance of showers, mainly before 9pm. Partly cloudy, with a low around 45. Southwest wind 3 to 8 mph.

Monday

Mostly sunny, with a high near 65. Calm wind becoming northwest 5 to 7 mph in the afternoon.

Monday Night

Mostly clear, with a low around 46. West southwest wind 6 to 8 mph.

Tuesday

Sunny, with a high near 67.

Tuesday Night

Mostly clear, with a low around 45.

Wednesday

Mostly sunny, with a high near 68.