Johnston Key - Southwest End Weather Forecast

    • 73
    • 81

    Chance Rain Showers

    • 74
    • 80

    Chance Rain Showers

    • 74
    • 81

    Rain Showers Likely

    • 74
    • 80

    Rain Showers Likely

    • 70
    • 81

    Chance Thunderstorms

    • 66
    • 76

    Chance Rain Showers

Today 12 Mar Monroe Lower Keys

Partly sunny with a slight chance of Showers. Highs in the lower to mid 80s. Southeast to south Winds 10 to 15 Mph, becoming southwest 5 to 10 Mph. Chance of rain 20 percent.

Tonight 12 Mar Monroe Lower Keys

Partly cloudy in the Evening, then becoming mostly cloudy. A chance of Showers. Lows in the lower to mid 70s. Southwest to west Winds near 5 Mph, becoming northwest to north. Chance of rain 30 percent.

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Johnston Key - Southwest End Temperature Statistics

March Temperature

Key West Naval Air Station (10.6 miles)

  • Lowest 1 March, 2026

    71.1 °F

  • Average March

    77.8 °F

  • Highest 5 March, 2026

    84 °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

    81.7 °F

  • Average High 2021–2026

    86.5 °F
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