Severe Thunderstorms for the Center of the Nation; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

A round of severe thunderstorms are forecast across areas of the Southern Plains, Mississippi Valley and Great Lakes this afternoon and tonight; The threat for flash flooding will also accompany these storms. The rainfall for the Great Lakes region could prolong the ongoing flooding. Where the rain is needed, the Southern High Plains, critical fire weather concerns through today. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

Lat: 37.33333°NLon: 121.81667°WElev: 135.0ft.

Clear

64°F

18°C

Humidity 34%
Wind Speed NW 6 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 17 Apr 07:47 PM PDT
Extended Forecast for

Mount Hamilton CA

  • Today

    Today: Mostly sunny, with a high near 66. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. West wind around 5 mph becoming calm  in the evening.

    Low: 50 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 64. South southwest wind 3 to 8 mph.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44. South southwest wind 6 to 9 mph.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers after 11am.  Mostly sunny, with a high near 62. South wind 6 to 10 mph, with gusts as high as 21 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers, mainly after 11pm.  Low around 48. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 11am.  High near 50. Chance of precipitation is 90%.

    High: 50 °F

    Showers

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 11pm.  Mostly cloudy, with a low around 43.

    Low: 43 °F

    Rain Likely

  • Wednesday

    Wednesday: A chance of rain, mainly before 11am.  Partly sunny, with a high near 52.

    High: 52 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 66. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 50. West wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 64. South southwest wind 3 to 8 mph.
Sunday Night
Partly cloudy, with a low around 44. South southwest wind 6 to 9 mph.
Monday
A 30 percent chance of showers after 11am. Mostly sunny, with a high near 62. South wind 6 to 10 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Showers, mainly after 11pm. Low around 48. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Showers, with thunderstorms also possible after 11am. High near 50. Chance of precipitation is 90%.
Tuesday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 43.
Wednesday
A chance of rain, mainly before 11am. Partly sunny, with a high near 52.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 58.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Sunny, with a high near 60.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Hamilton CA
 37.35°N 121.64°W (Elev. 2398 ft)
1:41 am PDT Apr 18, 2026
4am PDT Apr 18, 2026-6pm PDT Apr 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database