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

LAS TRAMPAS (LTRC1)

Lat: 37.83389°NLon: 122.06694°WElev: 1760.0ft.

51°F

11°C

Humidity	100%
Wind Speed	WSW 13 MPH
Barometer	NA
Dewpoint	51°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

5 Miles NW Castro Valley CA

Tonight
Low: 55 °F
Chance Rain
Saturday
High: 61 °F
Showers
Saturday Night
Low: 48 °F
Showers
Sunday
High: 58 °F
Showers
Sunday Night
Low: 46 °F
Chance Rain
Monday
High: 63 °F
Slight Chance
Rain
Monday Night
Low: 46 °F
Mostly Clear
Tuesday
High: 64 °F
Sunny
Tuesday Night
Low: 46 °F
Mostly Clear

Detailed Forecast

Tonight

A chance of rain and thunderstorms before 3am, then a slight chance of rain after 4am. Mostly cloudy, with a steady temperature around 55. South southwest wind 6 to 8 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Rain and thunderstorms likely, then showers and possibly a thunderstorm after 2pm. High near 61. South wind 9 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. 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 48. South southwest wind 10 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday

Showers and possibly a thunderstorm. High near 58. Southwest wind 11 to 14 mph, with gusts as high as 26 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, mainly before 11pm. Partly cloudy, with a low around 46. West southwest wind 5 to 10 mph becoming light southwest after midnight. Winds could gust as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.

Monday

A 20 percent chance of rain after 11am. Mostly sunny, with a high near 63.

Monday Night

Mostly clear, with a low around 46.

Tuesday

Sunny, with a high near 64.

Tuesday Night

Mostly clear, with a low around 46.

Wednesday

Sunny, with a high near 66.

Wednesday Night

Partly cloudy, with a low around 47.