Shell Key Channel Weather Forecast

    • 83
    • 89

    Mostly Sunny

    • 83
    • 88

    Mostly Sunny

    • 83
    • 89

    Mostly Sunny

    • 83
    • 89

    Slight Chance Thunderstorms

    • 83
    • 88

    Mostly Sunny

    • 84
    • 88

    Mostly Sunny

Today 16 Aug Monroe Upper Keys

Mostly sunny. Highs in the lower 90s. East Winds near 10 Mph.

Tonight 16 Aug Monroe Upper Keys

Partly cloudy. Lows in the lower 80s. East Winds 5 to 10 Mph.

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Shell Key Channel Temperature Statistics

August Temperature

The Florida Keys - Marathon International Airport (27.3 miles)

  • Lowest 12 August, 2026

    77 °F

  • Average August

    86.3 °F

  • Highest 1 August, 2026

    91.7 °F

Climate (2021–2026)

The Florida Keys - Marathon International Airport (27.3 miles)

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  • Average Low 2021–2026

    75.4 °F

  • Average 2021–2026

    80.1 °F

  • Average High 2021–2026

    85.1 °F
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