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      Heat Advisory
      until 10:00 PM PDT
      Elev 243 ft, 37.316 °N 122.027 °W

      Cupertino, CA

      South Blaney Station62°
      Updated: 12:40 AM PDT on September 8, 2026 (GMT -7)
      1 minute ago
      64°
      55°
      62
      Feels Like 62
      Clear
      N
      0
      Similar temperature is expected today
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Tonight
        Tue 09/08
        Low 59°f
         1% Precip. / 0 in
        A clear sky. Low 59F. Winds light and variable.
        Tomorrow
        Wed 09/09
        High 92°f
         1% Precip. / 0 in
        Generally sunny despite a few afternoon clouds. High 92F. Winds NNE at 5 to 10 mph.
        Tomorrow night
        Wed 09/09
        Low 69°f
         0% Precip. / 0 in
        A few clouds. Low 69F. Winds NNE at 5 to 10 mph.
        Hourly Forecast
        Now
        64°
        1AM
        64°
        2AM
        63°
        3AM
        63°
        4AM
        63°
        5AM
        62°
        6AM
        61°
        6:44AM
        Sunrise
        7AM
        61°
        8AM
        65°
        9AM
        70°
        10AM
        75°
        11AM
        80°
        12PM
        83°
        1PM
        86°
        2PM
        89°
        3PM
        90°
        4PM
        90°
        5PM
        89°
        6PM
        87°
        7PM
        83°
        7:25PM
        Sunset
        8PM
        79°
        9PM
        76°
        10PM
        75°
        11PM
        73°
        12AM
        72°
        Precipitation
        1%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        36
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.93 in
        2. Visibility 10 miles
        3. Clouds Clear
        4. Dew Point51°F
        5. Humidity 63%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KSJC Station History
        Almanac for September 8, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 64°F 84°F 103°F 1984
        4. Low 55°F 55°F 45°F 2002
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.5 in -
        7. Snow 0 in 0 in -
        Almanac for September 9, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 86°F 84°F 106°F
        4. Low 55°F 54°F 42°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:44 AM 7:26 PM
        3. Civil Twilight 6:18 AM 7:52 PM
        4. Nautical Twilight 5:47 AM 8:23PM
        5. Astronomical Twilight 5:15 AM 8:55 PM
        1. Length of Visible Light 13h 34m
        2. Length of Day 12h 41m
        3. Tomorrow will be 2 minutes 20 seconds shorter
        1. Moon 3:52 AM 6:13 PM
        2. Waning Crescent9% of the Moon is Illuminated
        Sep 10
        New Moon
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Precipitation
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