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

Hazardous Weather Conditions

Current conditions at

San Jose, San Jose International Airport (KSJC)

Lat: 37.35917°NLon: 121.92417°WElev: 59.0ft.

Clear

26°C

79°F

Humidity 40%
Wind Speed N 0 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 12°C (53°F)
Visibility 16 km
Heat Index26°C (79°F)
Last update 09 Sep 11:53 PM PDT
Extended Forecast for

3 Miles NE Cupertino CA

Heat Advisory September 10, 12:09am until September 10, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 10, 12:09am until September 10, 10:00pm

    NOW until 10:00pm Thu

    Heat Advisory

  • Overnight

    Low: 23 °C

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 33. Light west northwest wind becoming north northwest 11 to 16 km/h in the morning. Winds could gust as high as 29 km/h.

    High: 33 °C

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 16. North wind 5 to 10 km/h becoming calm after midnight.

    Low: 16 °C

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 28. Light west northwest wind becoming northwest 9 to 14 km/h in the afternoon.

    High: 28 °C

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 14. West wind 5 to 14 km/h.

    Low: 14 °C

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 24.

    High: 24 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 13.

    Low: 13 °C

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 26.

    High: 26 °C

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 23. Calm wind.
Thursday
Sunny, with a high near 33. Light west northwest wind becoming north northwest 11 to 16 km/h in the morning. Winds could gust as high as 29 km/h.
Thursday Night
Mostly clear, with a low around 16. North wind 5 to 10 km/h becoming calm after midnight.
Friday
Sunny, with a high near 28. Light west northwest wind becoming northwest 9 to 14 km/h in the afternoon.
Friday Night
Mostly clear, with a low around 14. West wind 5 to 14 km/h.
Saturday
Sunny, with a high near 24.
Saturday Night
Mostly clear, with a low around 13.
Sunday
Sunny, with a high near 26.
Sunday Night
Mostly clear, with a low around 13.
Monday
Sunny, with a high near 27.
Monday Night
Mostly clear, with a low around 13.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Partly cloudy, with a low around 13.
Wednesday
Mostly sunny, with a high near 25.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Cupertino CA
 37.34°N 122.01°W (Elev. 167 m)
Last Update:
11:27 pm PDT Sep 9, 2026
Forecast Valid:
12am PDT Sep 10, 2026-6pm PDT Sep 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation