Shell Key Channel Weather Forecast

    • 78
    • 84

    Partly Sunny

    • 79
    • 85

    Chance Thunderstorms

    • 79
    • 85

    Rain Showers Likely

    • 80
    • 85

    Rain Showers

    • 81
    • 86

    Rain Showers

    • 81
    • 86

    Rain Showers Likely

    • 81
    • 86

    Chance Thunderstorms

Today 27 Sep Monroe Upper Keys

Mostly sunny with a chance of Showers and a slight chance of Thunderstorms. Highs in the upper 80s. Chance of rain 40 percent.

Tonight 27 Sep Monroe Upper Keys

Partly cloudy. Lows in the upper 70s. West Winds near 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Shell Key Channel Temperature Statistics

September Temperature

The Florida Keys - Marathon International Airport (27.3 miles)

  • Lowest 20 September, 2026

    77.6 °F

  • Average September

    85.4 °F

  • Highest 1 September, 2026

    92.6 °F

Climate (2021–2026)

The Florida Keys - Marathon International Airport (27.3 miles)

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  • Average Low 2021–2026

    75.5 °F

  • Average 2021–2026

    80.2 °F

  • Average High 2021–2026

    85.1 °F
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