Shell Key Channel Weather Forecast

    • 83
    • 91

    Slight Chance Thunderstorms

    • 82
    • 89

    Slight Chance Thunderstorms

    • 83
    • 91

    Mostly Sunny

    • 83
    • 90

    Slight Chance Thunderstorms

    • 83
    • 88

    Slight Chance Thunderstorms

    • 84
    • 88

    Mostly Sunny

Today 19 Jul Monroe Upper Keys

Mostly sunny with a slight chance of Showers and Thunderstorms. Highs near 90. Southeast to south Winds 10 to 15 Mph, decreasing to 5 to 10 Mph. Chance of rain 20 percent.

Tonight 19 Jul Monroe Upper Keys

Partly cloudy with a chance of Showers and a slight chance of Thunderstorms. Lows in the lower to mid 80s. Southeast to south Winds 5 to 10 Mph, increasing to 10 to 15 Mph. Chance of rain 30 percent.

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Shell Key Channel Temperature Statistics

July Temperature

The Florida Keys - Marathon International Airport (27.3 miles)

  • Lowest 10 July, 2026

    74.6 °F

  • Average July

    86.9 °F

  • Highest 16 July, 2026

    93.7 °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 °F
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