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 76%
Wind Speed SSE 8 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 12 Apr 08:47 AM PDT
Extended Forecast for

3 Miles SSE Mount Hamilton CA

  • Today

    Today: Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm.  High near 46. Southwest wind 11 to 14 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 46 °F

    Showers

  • Tonight

    Tonight: A 30 percent chance of showers before 8pm.  Mostly cloudy, with a low around 39. West southwest wind 5 to 8 mph becoming calm  in the evening.  New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 53. Calm wind becoming west northwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 53 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. West northwest wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 57. West wind 5 to 7 mph.

    High: 57 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. High near 46. Southwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 39. West southwest wind 5 to 8 mph becoming calm in the evening. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Mostly sunny, with a high near 53. Calm wind becoming west northwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Mostly clear, with a low around 41. West northwest wind 6 to 9 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 57. West wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Mostly sunny, with a high near 58.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 58.
Thursday Night
Clear, with a low around 41.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Mount Hamilton CA
 37.31°N 121.63°W (Elev. 2933 ft)
8:36 am PDT Apr 12, 2026
9am PDT Apr 12, 2026-6pm PDT Apr 18, 2026
 
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