Johnson Keys - North Side Weather Forecast

    • 72
    • 81

    Chance Rain Showers

    • 72
    • 78

    Breezy

    • 72
    • 78

    Mostly Cloudy

    • 73
    • 78

    Partly Sunny

    • 74
    • 80

    Mostly Sunny

    • 75
    • 81

    Mostly Sunny

Today 20 Apr Monroe Lower Keys

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the lower to mid 80s. Northeast Winds near 10 Mph, increasing to 10 to 15 Mph in the late afternoon. Chance of rain 20 percent.

Tonight 20 Apr Monroe Lower Keys

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Becoming windy. Lows in the lower 70s. Northeast Winds near 15 Mph, increasing to 20 to 25 Mph after midnight. Chance of rain 30 percent.

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Johnson Keys - North Side Temperature Statistics

April Temperature

The Florida Keys - Marathon International Airport (17.4 miles)

  • Lowest 11 April, 2026

    72.6 °F

  • Average April

    78.1 °F

  • Highest 2 April, 2026

    82.7 °F

Climate (2021–Present)

The Florida Keys - Marathon International Airport (17.4 miles)

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  • Average Low 2021–2026

    75.3 °F

  • Average 2021–2026

    80 °F

  • Average High 2021–2026

    85 °F
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