Biscayne Bay - MacArthur Causeway Weather Forecast

    • 74
    • 82

    Increasing Clouds

    • 70
    • 84

    Chance Rain Showers

    • 70
    • 76

    Slight Chance Rain Showers

    • 67
    • 78

    Partly Sunny

    • 69
    • 79

    Partly Sunny

    • 69
    • 80

    Slight Chance Rain Showers

    • 67
    • 77

    Mostly Cloudy

Today 7 Dec Coastal Miami Dade County

Mostly sunny. Highs in the lower 80s. East Winds 5 to 10 Mph, becoming south this afternoon.

Tonight 7 Dec Coastal Miami Dade County

Partly cloudy. Lows in the lower 70s. Southwest Winds 5 to 10 Mph.

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Biscayne Bay - MacArthur Causeway Temperature Statistics

December Temperature

Miami, Miami International Airport (8.1 miles)

  • Lowest 4 December, 2025

    66 °F

  • Average December

    76.1 °F

  • Highest 2 December, 2025

    84.9 °F

Climate (2020–Present)

Miami, Miami International Airport (8.1 miles)

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  • Average Low 2020–2025

    72.6 °F

  • Average 2020–2025

    78.5 °F

  • Average High 2020–2025

    85.4 °F
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