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.

Mostly Cloudy

54°F

12°C

Humidity 71%
Wind Speed N 0 MPH
Barometer 29.82 in (1009.82 mb)
Dewpoint 45°F (7°C)
Visibility 9.00 mi
Last update 11 Apr 09:47 PM PDT
Extended Forecast for

11 Miles ENE Mount Hamilton CA

  • Today

    Today: Showers before 8am, then showers likely and possibly a thunderstorm between 8am and 4pm, then a chance of showers and thunderstorms after 4pm.  High near 48. Southwest wind 14 to 20 mph, with gusts as high as 32 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 48 °F

    Showers

  • Tonight

    Tonight: A 50 percent chance of showers, mainly before 7pm.  Patchy frost after 3am.  Otherwise, partly cloudy, with a low around 35. West southwest wind 5 to 10 mph, with gusts as high as 18 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance
    Showers then
    Patchy Frost

  • Monday

    Monday: Patchy frost before 7am.  Otherwise, mostly sunny, with a high near 55. Northwest wind 3 to 8 mph.

    High: 55 °F

    Patchy Frost
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Patchy frost after 5am.  Otherwise, mostly clear, with a low around 36. West wind around 9 mph.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Tuesday

    Tuesday: Patchy frost before 7am.  Otherwise, sunny, with a high near 60. West southwest wind 3 to 7 mph.

    High: 60 °F

    Patchy Frost
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

Today
Showers before 8am, then showers likely and possibly a thunderstorm between 8am and 4pm, then a chance of showers and thunderstorms after 4pm. High near 48. Southwest wind 14 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 50 percent chance of showers, mainly before 7pm. Patchy frost after 3am. Otherwise, partly cloudy, with a low around 35. West southwest wind 5 to 10 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Patchy frost before 7am. Otherwise, mostly sunny, with a high near 55. Northwest wind 3 to 8 mph.
Monday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 36. West wind around 9 mph.
Tuesday
Patchy frost before 7am. Otherwise, sunny, with a high near 60. West southwest wind 3 to 7 mph.
Tuesday Night
Mostly clear, with a low around 37.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Sunny, with a high near 59.
Thursday Night
Clear, with a low around 38.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles ENE Mount Hamilton CA
 37.42°N 121.46°W (Elev. 2864 ft)
1:25 am PDT Apr 12, 2026
6am PDT Apr 12, 2026-6pm PDT Apr 18, 2026
 
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