Johnson Keys - South End Weather Forecast

    • 69
    • 76

    Mostly Sunny

    • 71
    • 76

    Mostly Sunny

    • 72
    • 77

    Mostly Sunny

    • 71
    • 77

    Partly Sunny

    • 71
    • 78

    Breezy

    • 67
    • 74

    Partly Sunny

Today 7 Jan Monroe Lower Keys

Mostly sunny. Highs in the upper 70s. Northeast to east Winds 5 to 10 Mph, increasing to near 10 Mph.

Tonight 7 Jan Monroe Lower Keys

Mostly clear with a slight chance of Showers. Lows near 70. Northeast to east Winds near 10 Mph. Chance of rain 10 percent.

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Johnson Keys - South End Temperature Statistics

January Temperature

The Florida Keys - Marathon International Airport (15.5 miles)

  • Lowest 1 January, 2026

    55.9 °F

  • Average January

    65.3 °F

  • Highest 4 January, 2026

    77 °F

Climate (2021–Present)

The Florida Keys - Marathon International Airport (15.5 miles)

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  • Average Low 2021–2026

    75.4 °F

  • Average 2021–2026

    80 °F

  • Average High 2021–2026

    85.1 °F
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