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    • Tonight

      Sep 29

      54° Lo F
      Increasing cloudiness
      • Common Cold
        • Common Cold
        • Flu
      • Common Cold
      • Weather
      • Avg Temp: 64°
      • Avg RealFeel: 66°
      • Hi RealFeel: 77°
    • Fri

      Sep 30

      70° /56°
      Low clouds, then some sun
      • Beneficial
      • weather for colds
      • Avg Temp: 63°
      • Avg RealFeel: 63°
      • Hi RealFeel: 72°
      More
    • Sat

      Oct 1

      73° /55°
      Low clouds breaking
      • Beneficial
      • weather for colds
      • Avg Temp: 64°
      • Avg RealFeel: 65°
      • Hi RealFeel: 74°
      More
    • Sun

      Oct 2

      71° /55°
      Cool with clouds and sun
      • Beneficial
      • weather for colds
      • Avg Temp: 63°
      • Avg RealFeel: 64°
      • Hi RealFeel: 72°
      More
    • Mon

      Oct 3

      67° /53°
      Partly sunny and cool
      • Beneficial
      • weather for colds
      • Avg Temp: 60°
      • Avg RealFeel: 62°
      • Hi RealFeel: 70°
      More

    Day

    73°Hi RealFeel® 77° Precipitation 2%
    Low clouds followed by sunshine
    • WNW 8 mph
    • Gusts: 16 mph
    • Max UV Index: 5 (Moderate)
    • Thunderstorms: 11%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    54°Lo RealFeel® 54° Precipitation 3%
    Mainly clear this evening; low clouds late
    • WNW 6 mph
    • Gusts: 15 mph
    • Max UV Index: N/A
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/29/2015
    High 73° 78° N/A 71°
    Low 54° 51° N/A 59°

    Sunrise/Sunset

    • Sunrise: 7:03 AM
    • Sunset: 6:53 PM
    • Duration: 11:50 hr

    Moonrise/Moonset

    • Moonrise: 5:46 AM
    • Moonset: 6:28 PM
    • Duration: 12:42 hr
    Astronomy

    Cupertino Weather Report

    Cooler air, showers to aid in wildfire efforts across California this weekend

    September 29, 2016; 9:54 PM ET

    Improving weather over the next several days will aid officials in battling wildfires across California. More >

    Thu. Cold & Flu

    Thu. UV Index