Johnston Key - Southwest End Weather Forecast

    • 81
    • 88

    Chance Rain Showers

    • 82
    • 89

    Chance Rain Showers

    • 81
    • 89

    Chance Rain Showers

    • 81
    • 88

    Chance Rain Showers

    • 81
    • 88

    Slight Chance Thunderstorms

    • 82
    • 89

    Slight Chance Thunderstorms

Today 16 May Monroe Lower Keys

Mostly sunny this Morning, then becoming partly sunny. A slight chance of Showers and Thunderstorms. Highs 85 to 90. East to southeast Winds near 5 Mph, increasing to 10 to 15 Mph. Chance of rain 20 percent.

Tonight 16 May Monroe Lower Keys

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Lows near 80. East Winds near 15 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnston Key - Southwest End Temperature Statistics

May Temperature

Key West Naval Air Station (10.6 miles)

  • Lowest 1 May, 2026

    75 °F

  • Average May

    82.1 °F

  • Highest 8 May, 2026

    89.1 °F

Climate (2021–Present)

Key West Naval Air Station (10.6 miles)

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  • Average Low 2021–2026

    77.2 °F

  • Average 2021–2026

    81.8 °F

  • Average High 2021–2026

    86.5 °F
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