National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Clear

73°F

23°C

Humidity 56%
Wind Speed NA 3 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 17 Mar 09:47 PM PDT
Extended Forecast for

6 Miles NNW Mount Hamilton CA

Heat Advisory March 18, 03:19am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 18, 03:19am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Overnight

    Low: 71 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. East wind around 6 mph becoming west in the afternoon.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 62. North northwest wind around 6 mph becoming south southeast in the evening.

    Low: 62 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 91. Northeast wind around 6 mph becoming north northwest in the afternoon.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 62. North wind 6 to 8 mph becoming east after midnight.

    Low: 62 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Overnight
Clear, with a steady temperature around 71. East southeast wind around 5 mph.
Wednesday
Sunny, with a high near 90. East wind around 6 mph becoming west in the afternoon.
Wednesday Night
Clear, with a low around 62. North northwest wind around 6 mph becoming south southeast in the evening.
Thursday
Sunny, with a high near 91. Northeast wind around 6 mph becoming north northwest in the afternoon.
Thursday Night
Clear, with a low around 62. North wind 6 to 8 mph becoming east after midnight.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 61.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 53.
Monday
Mostly sunny, with a high near 78.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Mount Hamilton CA
 37.43°N 121.69°W (Elev. 3619 ft)
Last Update:
1:59 am PDT Mar 18, 2026
Forecast Valid:
3am PDT Mar 18, 2026-6pm PDT Mar 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation