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

63°F

17°C

Humidity 59%
Wind Speed SSW 17 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 11 Apr 01:47 PM PDT
Extended Forecast for

10 Miles NNE Mount Hamilton CA

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 4pm.  Mostly cloudy, with a high near 49. South southwest wind 18 to 21 mph, with gusts as high as 33 mph.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 49 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers and thunderstorms before 4am, then showers likely.  Low around 34. Breezy, with a southwest wind 18 to 23 mph, with gusts as high as 36 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 34 °F

    Showers and
    Breezy then
    Showers
    Likely

  • Sunday

    Sunday: Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm.  High near 46. Southwest wind 14 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 46 °F

    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers before 11pm.  Patchy frost after 2am.  Otherwise, partly cloudy, with a low around 33. West southwest wind 6 to 14 mph, with gusts as high as 23 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Chance
    Showers then
    Patchy Frost

  • Monday

    Monday: Patchy frost before 8am.  Otherwise, mostly sunny, with a high near 52. West northwest wind 6 to 9 mph.

    High: 52 °F

    Patchy Frost
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Areas of frost after 5am.  Otherwise, mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear
    then Areas
    Frost

  • Tuesday

    Tuesday: Areas of frost before 8am.  Otherwise, sunny, with a high near 58.

    High: 58 °F

    Areas Frost
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 49. South southwest wind 18 to 21 mph, with gusts as high as 33 mph. 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. Low around 34. Breezy, with a southwest wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 46. Southwest wind 14 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 40 percent chance of showers before 11pm. Patchy frost after 2am. Otherwise, partly cloudy, with a low around 33. West southwest wind 6 to 14 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Patchy frost before 8am. Otherwise, mostly sunny, with a high near 52. West northwest wind 6 to 9 mph.
Monday Night
Areas of frost after 5am. Otherwise, mostly clear, with a low around 33.
Tuesday
Areas of frost before 8am. Otherwise, sunny, with a high near 58.
Tuesday Night
Mostly clear, with a low around 34.
Wednesday
Sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Sunny, with a high near 59.
Thursday Night
Clear, with a low around 37.
Friday
Sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNE Mount Hamilton CA
 37.48°N 121.56°W (Elev. 3707 ft)
1:26 pm PDT Apr 11, 2026
2pm PDT Apr 11, 2026-6pm PDT Apr 17, 2026
 
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Additional Resources

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