Johnson Keys - South End Weather Forecast

    • 75
    • 81

    Increasing Clouds

    • 74
    • 81

    Mostly Cloudy

    • 73
    • 81

    Slight Chance Thunderstorms

    • 72
    • 78

    Breezy

    • 71
    • 77

    Slight Chance Thunderstorms

    • 73
    • 77

    Partly Sunny

Today 18 Apr Monroe Lower Keys

Partly sunny with a slight chance of Showers this Morning, then becoming mostly sunny. Highs in the lower to mid 80s. East to southeast Winds near 10 Mph, decreasing to 5 to 10 Mph. Chance of rain 10 percent.

Tonight 18 Apr Monroe Lower Keys

Partly cloudy with a slight chance of Showers. Lows in the mid 70s. East Winds 5 to 10 Mph. Chance of rain 10 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnson Keys - South End Temperature Statistics

April Temperature

The Florida Keys - Marathon International Airport (15.5 miles)

  • Lowest 16 April, 2026

    72 °F

  • Average April

    78.1 °F

  • Highest 2 April, 2026

    82.7 °F

Climate (2021–Present)

The Florida Keys - Marathon International Airport (15.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    75.3 °F

  • Average 2021–2026

    80 °F

  • Average High 2021–2026

    85 °F
Get WillyWeather+ to remove ads