Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

San Jose, San Jose International Airport (KSJC)

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

Clear

60°F

16°C

Humidity 86%
Wind Speed NNW 3 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 19 Aug 12:53 AM PDT
Extended Forecast for

3 Miles E Cupertino CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 86. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 86 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 60. North northwest wind around 6 mph becoming calm  in the evening.

    Low: 60 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 82. Calm wind becoming northwest 5 to 8 mph in the afternoon.

    High: 82 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59. West northwest wind 3 to 8 mph.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 59. Calm wind.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 86. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 60. North northwest wind around 6 mph becoming calm in the evening.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 82. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 59. West northwest wind 3 to 8 mph.
Friday
Partly sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 59.
Monday
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Cupertino CA
 37.31°N 122.01°W (Elev. 197 ft)
12:47 am PDT Aug 19, 2026
1am PDT Aug 19, 2026-6pm PDT Aug 25, 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