My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Elev 10 ft, 25.696 °N 80.168 °W

      Key Biscayne, FL

      Key Biscayne Station79°
      Updated: 7:41 PM EDT on September 17, 2026 (GMT -4)
      4 minutes ago
      86°
      76°
      79
      Feels Like 84
      Light Rain
      N
      9
      Same temperature is expected tomorrow
      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 09/17
        Low 79°f
         58% Precip. / 0.15 in
        Variably cloudy with scattered thunderstorms. Low 79F. Winds NE at 5 to 10 mph. Chance of rain 60%.
        Tomorrow
        Fri 09/18
        High 84°f
         33% Precip. / 0.07 in
        Partly cloudy with a slight chance of thunderstorms. High 84F. Winds ENE at 5 to 10 mph. Chance of rain 30%.
        Tomorrow night
        Fri 09/18
        Low 77°f
         38% Precip. / 0.03 in
        Scattered thunderstorms in the evening. Partly cloudy skies overnight. Low 77F. Winds NNE at 5 to 10 mph. Chance of rain 40%.
        Hourly Forecast
        Now
        80°
        8PM
        58%
        81°
        9PM
        81°
        10PM
        81°
        11PM
        82°
        12AM
        82°
        1AM
        81°
        2AM
        51%
        81°
        3AM
        81°
        4AM
        37%
        80°
        5AM
        80°
        6AM
        80°
        7AM
        81°
        7:07AM
        Sunrise
        8AM
        80°
        9AM
        30%
        81°
        10AM
        82°
        11AM
        83°
        12PM
        31%
        84°
        1PM
        31%
        83°
        2PM
        33%
        83°
        3PM
        83°
        4PM
        83°
        5PM
        31%
        82°
        6PM
        82°
        7PM
        82°
        Precipitation
        58%
        Storms end by 9 PM
        Pollen
        None
        Air Quality
        23
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.01 in
        2. Visibility 10 miles
        3. Clouds Mostly Cloudy
        4. Dew Point74°F
        5. Humidity 82%
        6. Rainfall 0.91 in
        7. Snow Depth 0 in
         KMIA Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 86°F 87°F 91°F 2019
        4. Low 76°F 77°F 70°F 1947
        5. Rain/Snow Depth
        6. Precipitation 0.15 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 84°F 87°F 93°F
        4. Low 76°F 77°F 67°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:07 AM 7:22 PM
        3. Civil Twilight 6:44 AM 7:45 PM
        4. Nautical Twilight 6:17 AM 8:12PM
        5. Astronomical Twilight 5:50 AM 8:39 PM
        1. Length of Visible Light 13h 1m
        2. Length of Day 12h 15m
        3. Tomorrow will be 1 minute 29 seconds shorter
        1. Moon 1:12 PM 11:36 PM
        2. Waxing Crescent39% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
        Loading…
        Health
        Loading…
        Weather Alerts
        Loading…
        Our AppsAbout UsContactCareersWeather Data APIs
        PWS NetworkWundermap
        Terms of UsePrivacy PolicyCookie NoticeAccessibility StatementAdChoicesData Vendors
        essentialaccessibility.com
        We recognize our responsibility to use data and technology for good. We may use or share your data with our data vendors. Take control of your data.
        Review All Privacy and Ad Settings
        Choose how my information is shared
        Data Rights
        The Weather Company The Weather Channel Weather Underground Storm Radar
        © The Weather Company, LLC 2026
        Glossary