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

5 Miles SSW Mount Hamilton CA

  • Overnight

    Overnight: A 20 percent chance of rain before 5am.  Mostly cloudy, with a low around 48. South wind around 5 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: A chance of rain and thunderstorms before 4pm, then rain likely between 4pm and 5pm, then showers likely after 5pm.  Mostly cloudy, with a high near 61. South wind 7 to 16 mph, with gusts as high as 28 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 61 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms, mainly before 4am, then rain after 5am.  Low around 43. South wind 8 to 15 mph, with gusts as high as 29 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 43 °F

    Showers

  • Sunday

    Sunday: Rain before 8am, then showers and possibly a thunderstorm after 8am.  High near 56. Southwest wind 8 to 11 mph, with gusts as high as 22 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of rain before 11pm.  Mostly cloudy, with a low around 42. West southwest wind 5 to 9 mph becoming calm  in the evening. Winds could gust as high as 20 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 62.

    High: 62 °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 66.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of rain before 5am. Mostly cloudy, with a low around 48. South wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A chance of rain and thunderstorms before 4pm, then rain likely between 4pm and 5pm, then showers likely after 5pm. Mostly cloudy, with a high near 61. South wind 7 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms, mainly before 4am, then rain after 5am. Low around 43. South wind 8 to 15 mph, with gusts as high as 29 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 56. Southwest wind 8 to 11 mph, with gusts as high as 22 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 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 62.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 44.
Friday
Sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Mount Hamilton CA
 37.28°N 121.68°W (Elev. 1138 ft)
2:38 am PDT Apr 11, 2026
4am PDT Apr 11, 2026-6pm PDT Apr 17, 2026
 
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Additional Resources

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