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.

51°F

11°C

Humidity	99%
Wind Speed	SE 3 MPH
Barometer	NA
Dewpoint	51°F (11°C)
Visibility	NA
Last update	11 Apr 01:28 AM PDT

More Information:

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

Extended Forecast for

2 Miles NW Brentwood CA

Overnight
Low: 52 °F
Chance Rain
Saturday
High: 66 °F
Showers
Likely
Saturday Night
Low: 49 °F
Showers then
Showers
Likely
Sunday
High: 60 °F
Showers
Sunday Night
Low: 45 °F
Chance Rain
then Mostly
Clear
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

Overnight

A 30 percent chance of rain, mainly before 3am. Partly 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 and thunderstorms likely before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 66. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust 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

Showers and thunderstorms, mainly before midnight, then showers likely and possibly a thunderstorm after 3am. Low around 49. South southeast wind 7 to 14 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

Showers and possibly a thunderstorm. High near 60. South southeast wind 9 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 23 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 45. West southwest wind 5 to 10 mph becoming light south southwest after midnight. Winds could gust as high as 20 mph. 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 69.

Wednesday Night

Partly cloudy, with a low around 49.