Biscayne Bay - MacArthur Causeway Weather Forecast

    • 81
    • 88

    Thunderstorms Likely

    • 80
    • 88

    Thunderstorms Likely

    • 80
    • 89

    Chance Thunderstorms

    • 79
    • 89

    Thunderstorms Likely

    • 79
    • 88

    Rain Showers

    • 79
    • 88

    Thunderstorms Likely

Today 12 Sep Coastal Miami Dade County

Mostly sunny. A chance of Showers and Thunderstorms in the Morning, then Showers and Thunderstorms likely in the afternoon. Humid with Highs around 90. Southeast Winds 5 to 10 Mph. Chance of rain 70 percent. Heat index Values up to 106.

Tonight 12 Sep Coastal Miami Dade County

A chance of Thunderstorms in the evening. Partly cloudy with a chance of Showers. Humid with Lows around 80. Southeast Winds 5 to 10 Mph. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Biscayne Bay - MacArthur Causeway Temperature Statistics

September Temperature

Miami, Miami International Airport (8.1 miles)

  • Lowest 7 September, 2026

    74.6 °F

  • Average September

    84.4 °F

  • Highest 3 September, 2026

    93.7 °F

Climate (2021–2026)

Miami, Miami International Airport (8.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    72.6 °F

  • Average 2021–2026

    78.7 °F

  • Average High 2021–2026

    85.7 °F
Get WillyWeather+ to remove ads