
Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains
A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley this afternoon and evening. Large hail and strong winds are the primary threats. Read More >
Current conditions at
SJSU - Mount Diablo Summit Museum Rooftop (SJS02)
Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.NA
52°F
11°C
| Humidity | 78% |
| Wind Speed | SSW 7 MPH |
| Barometer | NA |
| Dewpoint | 46°F (8°C) |
| Visibility | NA |
| Last update | 09 Apr 11:50 AM PDT |
Extended Forecast for
4 Miles SSE Clayton CA
Tonight

Low: 53 °F
Chance
ShowersFriday

High: 58 °F
Showers
Friday Night

Low: 52 °F
Showers
Saturday

High: 56 °F
Showers
Saturday Night

Low: 48 °F
Showers
Sunday

High: 51 °F
Showers
Sunday Night
Low: 47 °F
Chance Rain
then Slight
Chance RainMonday

High: 57 °F
Mostly Sunny
Monday Night

Low: 47 °F
Mostly Clear
Detailed Forecast
Tonight
A 30 percent chance of showers, mainly between 2am and 5am. Partly cloudy, with a low around 53. Southwest wind 6 to 14 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
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 58. Southwest wind 7 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm. Low around 52. Southwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers, with thunderstorms also possible after 2pm. High near 56. South southwest wind 11 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm. Low around 48. South southwest wind 14 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
Showers, with thunderstorms also possible after 11am. High near 51. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 50 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 47.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 64.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
4 Miles SSE Clayton CA
37.9°N 121.9°W (Elev. 1814 ft)
37.9°N 121.9°W (Elev. 1814 ft)
1:26 pm PDT Apr 9, 2026
3pm PDT Apr 9, 2026-6pm PDT Apr 16, 2026


