Johnston Key - Southwest End Weather Forecast

    • 69
    • 75

    Decreasing Clouds

    • 72
    • 77

    Partly Sunny

    • 71
    • 79

    Rain Showers

    • 67
    • 77

    Rain Showers

    • 68
    • 76

    Breezy

    • 70
    • 76

    Breezy

Today 11 Dec Monroe Lower Keys

Partly sunny. Highs in the mid 70s. North Winds 5 to 10 Mph.

Tonight 11 Dec Monroe Lower Keys

Partly cloudy. Lows in the mid to upper 60s. Northeast Winds 5 to 10 Mph.

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Johnston Key - Southwest End Temperature Statistics

December Temperature

Key West Naval Air Station (10.6 miles)

  • Lowest 3 December, 2025

    70 °F

  • Average December

    77.2 °F

  • Highest 7 December, 2025

    84.9 °F

Climate (2020–Present)

Key West Naval Air Station (10.6 miles)

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  • Average Low 2020–2025

    77.3 °F

  • Average 2020–2025

    81.8 °F

  • Average High 2020–2025

    86.5 °F
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