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

San Jose / Reid / Hillv (KRHV)

Lat: 37.33333°NLon: 121.81667°WElev: 135.0ft.

Rain

59°F

15°C

Humidity 77%
Wind Speed SSE 6 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 52°F (11°C)
Visibility 2.00 mi
Last update 10 Apr 09:47 PM PDT
Extended Forecast for

10 Miles NNW Mount Hamilton CA

  • Today

    Today: Rain and thunderstorms likely before 3pm, then rain likely between 3pm and 5pm, then showers likely after 5pm.  Mostly cloudy, with a high near 49. South wind 14 to 21 mph, with gusts as high as 34 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 49 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then rain after 5am. Some of the storms could produce heavy rainfall.  Low around 41. Breezy, with a south southwest wind 17 to 23 mph, with gusts as high as 37 mph.  Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 41 °F

    Heavy Rain
    and Breezy

  • Sunday

    Sunday: Rain before 8am, then showers and possibly a thunderstorm after 8am.  High near 45. South southwest wind 16 to 21 mph, with gusts as high as 31 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 45 °F

    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of rain before 11pm.  Mostly cloudy, with a low around 42. West southwest wind 6 to 14 mph, with gusts as high as 22 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance Rain
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 51. West northwest wind 6 to 9 mph.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

Detailed Forecast

Today
Rain and thunderstorms likely before 3pm, then rain likely between 3pm and 5pm, then showers likely after 5pm. Mostly cloudy, with a high near 49. South wind 14 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then rain after 5am. Some of the storms could produce heavy rainfall. Low around 41. Breezy, with a south southwest wind 17 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Sunday
Rain before 8am, then showers and possibly a thunderstorm after 8am. High near 45. South southwest wind 16 to 21 mph, with gusts as high as 31 mph. 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 before 11pm. Mostly cloudy, with a low around 42. West southwest wind 6 to 14 mph, with gusts as high as 22 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 51. West northwest wind 6 to 9 mph.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 56.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 56.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 58.
Thursday Night
Clear, with a low around 45.
Friday
Sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNW Mount Hamilton CA
 37.48°N 121.68°W (Elev. 3599 ft)
2:38 am PDT Apr 11, 2026
6am PDT Apr 11, 2026-6pm PDT Apr 17, 2026
 
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