National Weather Service forecast

Key Biscayne, Florida Weather

78°Overnight: Chance Showers And Thunderstorms
Wind E 15 mph
7-DayHourlyRadar

Key Biscayne 7-Day Forecast

  1. Overnight
    78°F
    Chance Showers And Thunderstorms
    58% chance of precipitation

    A chance of showers and thunderstorms before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers and thunderstorms likely. Partly cloudy, with a low around 78. East wind around 15 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

  2. Wednesday
    83°F
    Showers And Thunderstorms Likely
    71% chance of precipitation

    Showers and thunderstorms likely before 2pm, then a slight chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms between 3pm and 4pm. Mostly sunny, with a high near 83. East wind 10 to 14 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

  3. Wednesday Night
    78°F
    Chance Rain Showers
    26% chance of precipitation

    A chance of rain showers between 8pm and 4am. Partly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.

  4. Thursday
    84°F
    Sunny
    12% chance of precipitation

    Sunny, with a high near 84. Northeast wind around 13 mph.

  5. Thursday Night
    78°F
    Mostly Clear
    4% chance of precipitation

    Mostly clear, with a low around 78. Northeast wind 7 to 12 mph.

  6. Friday
    84°F
    Sunny
    7% chance of precipitation

    Sunny, with a high near 84. Northeast wind around 9 mph.

  7. Friday Night
    76°F
    Mostly Clear
    7% chance of precipitation

    Mostly clear, with a low around 76. Northeast wind 5 to 8 mph.

  8. Saturday
    84°F
    Sunny
    9% chance of precipitation

    Sunny, with a high near 84. Northeast wind around 7 mph.

  9. Saturday Night
    75°F
    Slight Chance Rain Showers
    17% chance of precipitation

    A slight chance of rain showers after 7pm. Mostly clear, with a low around 75. Northeast wind around 6 mph. Chance of precipitation is 20%.

  10. Sunday
    83°F
    Slight Chance Rain Showers
    17% chance of precipitation

    A slight chance of rain showers. Sunny, with a high near 83. Chance of precipitation is 20%.

  11. Sunday Night
    74°F
    Slight Chance Rain Showers
    16% chance of precipitation

    A slight chance of rain showers before 1am. Partly cloudy, with a low around 74. Chance of precipitation is 20%.

  12. Monday
    81°F
    Mostly Sunny then Slight Chance Rain Showers
    21% chance of precipitation

    A slight chance of rain showers after 1pm. Mostly sunny, with a high near 81. Chance of precipitation is 20%.

  13. Monday Night
    73°F
    Slight Chance Rain Showers
    21% chance of precipitation

    A slight chance of rain showers. Partly cloudy, with a low around 73. Chance of precipitation is 20%.

  14. Tuesday
    81°F
    Slight Chance Rain Showers
    21% chance of precipitation

    A slight chance of rain showers. Mostly sunny, with a high near 81.

Issued by the National Weather Service (MFL office), updated .

Key Biscayne Hourly Forecast

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About Key Biscayne

Population (2020 Census)
14,809
Coordinates
25.691, -80.166
Elevation
3 ft
NWS forecast office
MFL
Time zone
America/New York
Sunrise today
6:30 AM EST
Sunset today
5:37 PM EST
Daylight today
11 h 7 min

Key Biscayne Weather Questions

What is the weather forecast for Key Biscayne, Florida?

Overnight: A chance of showers and thunderstorms before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers and thunderstorms likely. Partly cloudy, with a low around 78. East wind around 15 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible. Wednesday: Showers and thunderstorms likely before 2pm, then a slight chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms between 3pm and 4pm. Mostly sunny, with a high near 83. East wind 10 to 14 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

Will it rain or snow in Key Biscayne this week?

The best chance of precipitation is Wednesday at 71%. Periods with a 30% chance or more: Overnight (58%), Wednesday (71%).

How warm and how cold will it get in Key Biscayne this week?

The warmest day is Thursday, with a high near 84°F. The coldest night is Monday Night, with a low near 73°F.

What time are sunrise and sunset in Key Biscayne today?

Sunrise is at 6:30 AM EST and sunset is at 5:37 PM EST, for 11 h 7 min of daylight.

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