Key West - South Side Weather Forecast

    • 72
    • 84

    Slight Chance Rain Showers

    • 71
    • 81

    Partly Sunny

    • 72
    • 81

    Partly Sunny

    • 73
    • 80

    Mostly Cloudy

    • 74
    • 83

    Partly Sunny

    • 75
    • 84

    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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Key West - South Side Temperature Statistics

April Temperature

Key West International Airport (1.9 miles)

  • Lowest 13 April, 2026

    73.7 °F

  • Average April

    79.9 °F

  • Highest 9 April, 2026

    85.6 °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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