Heavy Rain and Flooding Concerns in Hawaii; Severe Weather this Weekend in the Plains; Pacific Storm in the West

A storm system near the Hawaiian Islands is expected to bring periods of heavy rainfall, strong winds, and isolated strong to severe thunderstorms through Friday. Several rounds of severe thunderstorms are forecast to impact parts of the Great Plains into the Midwest this weekend into next week. Moderate to heavy rainfall and high elevation snow is expected this weekend over California and Oregon. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

47°F

8°C

Humidity	84%
Wind Speed	SW 16 MPH
Barometer	NA
Dewpoint	43°F (6°C)
Visibility	NA
Wind Chill	41°F (5°C)
Last update	09 Apr 10:20 PM PDT

More Information:

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

Extended Forecast for

3 Miles ESE Danville CA

Overnight
Low: 50 °F
Chance Rain
and Patchy
Fog
Friday
High: 67 °F
Showers
Friday Night
Low: 49 °F
Showers
Likely
Saturday
High: 63 °F
Showers
Saturday Night
Low: 44 °F
Showers
Sunday
High: 59 °F
Showers
Sunday Night
Low: 43 °F
Chance Rain
and Patchy
Fog
Monday
High: 63 °F
Patchy Fog
then Mostly
Sunny
Monday Night
Low: 43 °F
Mostly Clear

Detailed Forecast

Overnight

A 40 percent chance of rain, mainly after 3am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 50. Calm wind. New precipitation amounts between a tenth and quarter of an inch possible.

Friday

Showers and thunderstorms, mainly before 3pm, then showers likely and possibly a thunderstorm after 5pm. High near 67. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 11pm, then a chance of rain after 11pm. Mostly cloudy, with a low around 49. South wind 3 to 7 mph. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Rain, mainly before 2pm, then showers and possibly a thunderstorm after 2pm. High near 63. South wind 5 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers and possibly a thunderstorm before 5am, then rain after 5am. Low around 44. South wind 7 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday

Rain before 8am, then showers and possibly a thunderstorm after 8am. High near 59. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

A 40 percent chance of rain, mainly before 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 43.

Monday

Patchy fog before 9am. Otherwise, mostly sunny, with a high near 63.

Monday Night

Mostly clear, with a low around 43.

Tuesday

Sunny, with a high near 67.

Tuesday Night

Mostly clear, with a low around 42.

Wednesday

Sunny, with a high near 71.