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.

54°F

12°C

Humidity	80%
Wind Speed	S 10 MPH
Barometer	NA
Dewpoint	48°F (9°C)
Visibility	NA
Last update	11 Apr 01:28 PM PDT

More Information:

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

Extended Forecast for

4 Miles ENE Clayton CA

This Afternoon
High: 58 °F
Chance
T-storms
Tonight
Low: 47 °F
Showers then
Showers
Likely
Sunday
High: 54 °F
Showers
Sunday Night
Low: 46 °F
Chance
Showers then
Partly Cloudy
Monday
High: 58 °F
Sunny
Monday Night
Low: 47 °F
Mostly Clear
Tuesday
High: 62 °F
Sunny
Tuesday Night
Low: 46 °F
Clear
Wednesday
High: 63 °F
Sunny

Detailed Forecast

This Afternoon

A 50 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 58. South wind 18 to 20 mph, with gusts as high as 33 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then a chance of showers and thunderstorms after 4am. Low around 47. South southwest wind 15 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday

Showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 54. West southwest wind 16 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 46. Southwest wind 8 to 16 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

Monday

Sunny, with a high near 58. West northwest wind 6 to 8 mph.

Monday Night

Mostly clear, with a low around 47.

Tuesday

Sunny, with a high near 62.

Tuesday Night

Clear, with a low around 46.

Wednesday

Sunny, with a high near 63.

Wednesday Night

Partly cloudy, with a low around 49.