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

2 Miles WSW Mount Hamilton CA

  • Overnight

    Overnight: A 50 percent chance of showers.  Mostly cloudy, with a steady temperature around 43. South southwest wind around 11 mph, with gusts as high as 23 mph.  New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm.  High near 50. Southwest wind 10 to 14 mph, with gusts as high as 26 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 50 °F

    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers, mainly before 7pm.  Mostly cloudy, with a low around 40. West southwest wind 5 to 7 mph becoming calm  in the evening.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 56. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40. West wind 3 to 8 mph.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 61.

    High: 61 °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 60.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 44 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 50 percent chance of showers. Mostly cloudy, with a steady temperature around 43. South southwest wind around 11 mph, with gusts as high as 23 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. High near 50. Southwest wind 10 to 14 mph, with gusts as high as 26 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, mainly before 7pm. Mostly cloudy, with a low around 40. West southwest wind 5 to 7 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 56. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 40. West wind 3 to 8 mph.
Tuesday
Mostly sunny, with a high near 61.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
Mostly cloudy, with a low around 44.
Thursday
Sunny, with a high near 61.
Thursday Night
Clear, with a low around 41.
Friday
Sunny, with a high near 66.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 70.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Mount Hamilton CA
 37.32°N 121.66°W (Elev. 2201 ft)
1:25 am PDT Apr 12, 2026
3am PDT Apr 12, 2026-6pm PDT Apr 18, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database