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.

45°F

7°C

Humidity	98%
Wind Speed	S 5 MPH
Barometer	NA
Dewpoint	45°F (7°C)
Visibility	NA
Wind Chill	42°F (6°C)
Last update	10 Apr 01:10 PM PDT

More Information:

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

Extended Forecast for

4 Miles ENE Danville CA

This Afternoon
High: 66 °F
Showers
Likely
Tonight
Low: 48 °F
Showers
Likely then
Chance Rain
Saturday
High: 62 °F
Showers
Saturday Night
Low: 44 °F
Showers
Sunday
High: 58 °F
Showers
Sunday Night
Low: 42 °F
Chance Rain
then Partly
Cloudy
Monday
High: 64 °F
Mostly Sunny
Monday Night
Low: 43 °F
Mostly Clear
Tuesday
High: 66 °F
Sunny

Detailed Forecast

This Afternoon

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 66. Southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Rain and thunderstorms likely before 3am, then a slight chance of rain between 3am and 4am. Mostly cloudy, with a low around 48. South southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Rain and thunderstorms before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. High near 62. South wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 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 44. South southwest wind 11 to 17 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 possibly a thunderstorm. High near 58. South southwest wind 13 to 16 mph, with gusts as high as 30 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 42. New precipitation amounts of less than a tenth of an inch possible.

Monday

Mostly sunny, with a high near 64.

Monday Night

Mostly clear, with a low around 43.

Tuesday

Sunny, with a high near 66.

Tuesday Night

Mostly clear, with a low around 42.

Wednesday

Sunny, with a high near 67.