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

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

36°F

2°C

Humidity	100%
Wind Speed	SSW 13 MPH
Barometer	NA
Dewpoint	36°F (2°C)
Visibility	NA
Wind Chill	27°F (-3°C)
Last update	11 Apr 09:05 PM PDT

More Information:

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

Extended Forecast for

8 Miles N Livermore Municipal CA

Tonight
Low: 45 °F
Chance
Showers then
Showers
Likely
Sunday
High: 51 °F
Showers and
Breezy
Sunday Night
Low: 46 °F
Chance
Showers then
Partly Cloudy
Monday
High: 56 °F
Mostly Sunny
Monday Night
Low: 46 °F
Mostly Clear
Tuesday
High: 60 °F
Sunny
Tuesday Night
Low: 46 °F
Mostly Clear
Wednesday
High: 60 °F
Sunny
Wednesday Night
Low: 48 °F
Partly Cloudy

Detailed Forecast

Tonight

A chance of 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. Mostly cloudy, with a low around 45. South southwest wind 16 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Sunday

Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 4pm, then a chance of showers and thunderstorms after 4pm. High near 51. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 46. Southwest wind 7 to 17 mph, with gusts as high as 29 mph. New precipitation amounts of less than a tenth of an inch possible.

Monday

Mostly sunny, with a high near 56. West northwest wind 6 to 9 mph.

Monday Night

Mostly clear, with a low around 46. Southwest wind 9 to 13 mph, with gusts as high as 21 mph.

Tuesday

Sunny, with a high near 60.

Tuesday Night

Mostly clear, with a low around 46.

Wednesday

Sunny, with a high near 60.

Wednesday Night

Partly cloudy, with a low around 48.