Key West - South Side Weather Forecast

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    • 81

    Chance Rain Showers

    • 73
    • 81

    Chance Rain Showers

    • 72
    • 81

    Chance Rain Showers

    • 73
    • 82

    Mostly Cloudy

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    • 82

    Slight Chance Rain Showers

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    • 82

    Partly Sunny

Today 29 Mar Monroe Lower Keys

Partly cloudy in the Morning, then becoming mostly sunny. A slight chance of Showers and Thunderstorms. Becoming breezy. Highs in the lower 80s. Northeast to east Winds near 15 Mph, increasing to 15 to 20 Mph. Chance of rain 20 percent.

Tonight 29 Mar Monroe Lower Keys

Partly cloudy with a chance of Showers. Breezy. Lows in the lower 70s. Northeast to east Winds 15 to 20 Mph, becoming east. Chance of rain 30 percent.

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Key West - South Side Temperature Statistics

March Temperature

Key West International Airport (1.9 miles)

  • Lowest 18 March, 2026

    63.6 °F

  • Average March

    77.2 °F

  • Highest 13 March, 2026

    86.6 °F

Climate (2021–Present)

Key West International Airport (1.9 miles)

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  • Average Low 2021–2026

    75.5 °F

  • Average 2021–2026

    79.5 °F

  • Average High 2021–2026

    83.9 °F
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