My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Elev 6 ft, 28.355 °N 80.703 °W

      Merritt Island, FL

      Merritt Island Airport Station80°
      Updated: 7:31 PM EDT on September 21, 2026 (GMT -4)
      4 minutes ago
      87°
      76°
      80
      Feels Like 85
      Mostly Cloudy
      N
      14
      Gusts 22 mph
      Similar 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
        Mon 09/21
        Low 75°f
         32% Precip. / 0 in
        Widely scattered showers or a thunderstorm this evening. Then partly cloudy. Low around 75F. SE winds shifting to SW at 10 to 15 mph. Chance of rain 30%.
        Tomorrow
        Tue 09/22
        High 87°f
         22% Precip. / 0 in
        Partly cloudy skies in the morning will give way to cloudy skies during the afternoon. A stray shower or thunderstorm is possible. High 87F. Winds NE at 5 to 10 mph.
        Tomorrow night
        Tue 09/22
        Low 76°f
         24% Precip. / 0 in
        Considerable cloudiness. Low 76F. Winds light and variable.
        Hourly Forecast
        Now
        81°
        8PM
        33%
        80°
        9PM
        79°
        10PM
        79°
        11PM
        78°
        12AM
        78°
        1AM
        77°
        2AM
        77°
        3AM
        77°
        4AM
        77°
        5AM
        77°
        6AM
        76°
        7AM
        76°
        7:11AM
        Sunrise
        8AM
        77°
        9AM
        79°
        10AM
        81°
        11AM
        83°
        12PM
        85°
        1PM
        86°
        2PM
        86°
        3PM
        86°
        4PM
        85°
        5PM
        84°
        6PM
        83°
        7PM
        82°
        Precipitation
        33%
        Thunderstorms likely around 8:00 PM
        Pollen
        None
        Air Quality
        28
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.88 in
        2. Visibility 10 miles
        3. Clouds Cloudy
        4. Dew Point78°F
        5. Humidity 93%
        6. Rainfall 0.14 in
        7. Snow Depth 0 in
         KCOI Station History
        Almanac for September 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 87°F 89°F 95°F 1937
        4. Low 76°F 75°F 57°F 1938
        5. Rain/Snow Depth
        6. Precipitation 0 in - in -
        7. Snow 0 in - in -
        Almanac for September 22, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 87°F 89°F 94°F
        4. Low 76°F 75°F 65°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:10 AM 7:20 PM
        3. Civil Twilight 6:47 AM 7:43 PM
        4. Nautical Twilight 6:19 AM 8:11PM
        5. Astronomical Twilight 5:52 AM 8:38 PM
        1. Length of Visible Light 12h 56m
        2. Length of Day 12h 9m
        3. Tomorrow will be 1 minute 40 seconds shorter
        1. Moon 4:29 PM 2:13 AM
        2. Waxing Gibbous77% of the Moon is Illuminated
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        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