Tank Island Weather Forecast

    • 79
    • 86

    Rain Showers Likely

    • 79
    • 85

    Rain Showers Likely

    • 80
    • 85

    Rain Showers

    • 81
    • 87

    Rain Showers

    • 81
    • 88

    Rain Showers Likely

    • 81
    • 88

    Chance Thunderstorms

Today 28 Sep Monroe Lower Keys

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the upper 80s. West Winds near 5 Mph, becoming south to southwest in the afternoon. Chance of rain 20 percent.

Tonight 28 Sep Monroe Lower Keys

Mostly cloudy with a chance of Showers and Thunderstorms. Lows in the upper 70s. South to southwest Winds near 5 Mph, becoming southeast to south. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tank Island Temperature Statistics

September Temperature

Key West International Airport (3.7 miles)

  • Lowest 20 September, 2026

    76.6 °F

  • Average September

    85.1 °F

  • Highest 12 September, 2026

    94.6 °F

Climate (2021–2026)

Key West International Airport (3.7 miles)

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  • Average Low 2021–2026

    75.7 °F

  • Average 2021–2026

    79.8 °F

  • Average High 2021–2026

    84.2 °F
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