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

Dangerous Heat in the West; Coastal Flooding & High Rip Current Risk into the Weekend on the East Coast; Flash Flooding Possible in the Southeast

A dangerous, record heat wave continues for the Desert Southwest and the Central Valley of California through Saturday, and the Pacific Northwest through Tuesday. Coastal flooding is expected through tonight at high tide along the Eastern Seaboard from Erin, while the high rip current risk and dangerous surf continue through the weekend. Flash flooding possible today in Georgia and South Carolina. Read More >

Hazardous Weather Conditions

Current conditions at

San Jose, San Jose International Airport (KSJC)

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

Partly Cloudy

59°F

15°C

Humidity 87%
Wind Speed NNW 5 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 55°F (13°C)
Visibility 8.00 mi
Last update 22 Aug 06:05 AM PDT
Extended Forecast for

2 Miles E Cupertino CA

Heat Advisory August 22, 06:21am until August 23, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 22, 06:21am until August 23, 09:00pm

    NOW until 9:00pm Sat

    Heat Advisory

  • Today

    High: 90 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 62. North wind 3 to 8 mph.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 86. Light north wind becoming north northwest 5 to 9 mph in the afternoon.

    High: 86 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 62. North wind 5 to 9 mph becoming light after midnight.

    Low: 62 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 85. Light north wind increasing to 5 to 10 mph in the afternoon.

    High: 85 °F

    Sunny

  • Sunday Night

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

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 90. Light north wind becoming north northwest 5 to 10 mph in the afternoon.
Tonight
Partly cloudy, with a low around 62. North wind 3 to 8 mph.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 86. Light north wind becoming north northwest 5 to 9 mph in the afternoon.
Saturday Night
Increasing clouds, with a low around 62. North wind 5 to 9 mph becoming light after midnight.
Sunday
Sunny, with a high near 85. Light north wind increasing to 5 to 10 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 83.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Cupertino CA
 37.31°N 122.01°W (Elev. 197 ft)
Last Update:
2:50 am PDT Aug 22, 2025
Forecast Valid:
6am PDT Aug 22, 2025-6pm PDT Aug 28, 2025
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation