My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Elev 243 ft, 37.316 °N 122.027 °W

      Cupertino, CA

      South Blaney Station56°
      Updated: 2:08 AM PDT on September 27, 2026 (GMT -7)
      4 minutes ago
      80°
      49°
      56
      Feels Like 56
      Mostly Cloudy
      N
      2
      Lower temperature is expected today
      Wundermap
      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
        Sun 09/27
        Low 54°f
         2% Precip. / 0 in
        Cloudy. Low 54F. Winds light and variable.
        Tomorrow
        Mon 09/28
        High 73°f
         5% Precip. / 0 in
        Morning clouds will give way to sunshine for the afternoon. High 73F. E winds shifting to NNW at 10 to 15 mph.
        Tomorrow night
        Mon 09/28
        Low 53°f
         7% Precip. / 0 in
        Mainly clear early, then a few clouds later on. Low 53F. Winds WNW at 5 to 10 mph.
        Hourly Forecast
        Now
        58°
        3AM
        58°
        4AM
        57°
        5AM
        57°
        6AM
        55°
        7AM
        55°
        7:00AM
        Sunrise
        8AM
        56°
        9AM
        58°
        10AM
        60°
        11AM
        62°
        12PM
        65°
        1PM
        69°
        2PM
        71°
        3PM
        71°
        4PM
        71°
        5PM
        69°
        6PM
        67°
        6:57PM
        Sunset
        7PM
        63°
        8PM
        61°
        9PM
        59°
        10PM
        58°
        11PM
        57°
        12AM
        56°
        1AM
        56°
        2AM
        55°
        Precipitation
        7%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        27
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.9 in
        2. Visibility 9 miles
        3. Clouds Mostly Cloudy
        4. Dew Point52°F
        5. Humidity 79%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KSJC Station History
        Almanac for September 27, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 80°F 81°F 101°F 1958
        4. Low 49°F 53°F 41°F 1948
        5. Rain/Snow Depth
        6. Precipitation 0 in 2.9 in -
        7. Snow 0 in 0 in -
        Almanac for September 28, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 72°F 81°F 98°F
        4. Low 49°F 53°F 43°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:00 AM 6:57 PM
        3. Civil Twilight 6:34 AM 7:23 PM
        4. Nautical Twilight 6:04 AM 7:53PM
        5. Astronomical Twilight 5:33 AM 8:23 PM
        1. Length of Visible Light 12h 48m
        2. Length of Day 11h 56m
        3. Tomorrow will be 2 minutes 23 seconds shorter
        1. Moon 7:19 PM 8:06 AM
        2. Waning Gibbous97% of the Moon is Illuminated
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 25
        Full Moon
        Nearby Weather Stations
        Station Location
        Temp
        Windchill
        Heat Index
        Dew Point
        Humidity
        Wind
        Precip.
        Elev.
        Updated
        Loading nearby stations…
        Precipitation
        Loading…
        Health
        Loading…
        Weather Alerts
        Loading…
        Our AppsAbout UsContactCareers
        PWS NetworkWunderMap
        Trust CenterTerms of UsePrivacy PolicyData RightsPrivacy SettingsCookie NoticeData VendorsAccessibility Statement
        Level Access
        The Weather Company The Weather Channel Weather Underground Storm Radar
        © The Weather Company, LLC 2026
        Glossary