Log In
    Favorites
        Member Settings
      Elev 13 ft, 37.744 °N 122.245 °W

      Alameda, CA

      Harbor Bay Isle Station65°
      Updated: 7:16 PM PDT on October 21, 2026 (GMT -7)
      7 minutes ago
      69°
      57°
      65
      Feels Like 65
      Mostly Cloudy
      N
      9
      Lower temperature is expected tomorrow
      Wundermap

      Loading nearby stations…

       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
        Thu 10/22
        Low 55°f
         51% Precip. / 0.04 in
        Cloudy skies early, then off and on rain showers overnight. Low around 55F. Winds N at 5 to 10 mph. Chance of rain 50%.
        Tomorrow
        Fri 10/23
        High 65°f
         35% Precip. / 0.05 in
        Rain showers in the morning becoming more intermittent in the afternoon. High near 65F. S winds shifting to W at 10 to 15 mph. Chance of rain 40%.
        Tomorrow night
        Fri 10/23
        Low 55°f
         10% Precip. / 0 in
        Mostly cloudy. Low near 55F. Winds WSW at 5 to 10 mph.
        Hourly Forecast
        Now
        64°
        8PM
        63°
        9PM
        62°
        10PM
        62°
        11PM
        60°
        12AM
        60°
        1AM
        53%
        59°
        2AM
        51%
        59°
        3AM
        40%
        58°
        4AM
        47%
        57°
        5AM
        37%
        57°
        6AM
        57°
        7AM
        35%
        56°
        7:24AM
        Sunrise
        8AM
        32%
        57°
        9AM
        59°
        10AM
        61°
        11AM
        62°
        12PM
        31%
        63°
        1PM
        34%
        63°
        2PM
        32%
        64°
        3PM
        64°
        4PM
        64°
        5PM
        63°
        6PM
        62°
        6:22PM
        Sunset
        7PM
        61°
        Precipitation
        53%
        Rain possible after 1 AM
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        23
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.83 in
        2. Visibility 9 miles
        3. Clouds Mostly Cloudy
        4. Dew Point53°F
        5. Humidity 68%
        6. Rainfall 0.02 in
        7. Snow Depth 0 in
         KOAK Station History
        Almanac for October 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 69°F 72°F 84°F 2019
        4. Low 57°F 54°F 47°F 2004
        5. Rain/Snow Depth
        6. Precipitation 0.04 in 3.9 in -
        7. Snow 0 in 0 in -
        Almanac for October 22, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 65°F 72°F 84°F
        4. Low 55°F 54°F 49°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:23 AM 6:23 PM
        3. Civil Twilight 6:56 AM 6:49 PM
        4. Nautical Twilight 6:26 AM 7:20PM
        5. Astronomical Twilight 5:55 AM 7:50 PM
        1. Length of Visible Light 11h 53m
        2. Length of Day 10h 59m
        3. Tomorrow will be 2 minutes 16 seconds shorter
        1. Moon 4:04 PM 2:33 AM
        2. Waxing Gibbous80% of the Moon is Illuminated
        Oct 25
        Full Moon
        Nov 1
        Waning Half Last Qtr
        Nov 8
        New Moon
        Nov 17
        Waxing Half First Qtr
        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