Key West - South Side Weather Forecast

    • 81
    • 89

    Slight Chance Thunderstorms

    • 81
    • 89

    Slight Chance Thunderstorms

    • 80
    • 91

    Chance Thunderstorms

    • 79
    • 90

    Rain Showers Likely

    • 79
    • 89

    Chance Thunderstorms

    • 79
    • 89

    Chance Thunderstorms

Today 31 May Monroe Lower Keys

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the upper 80s. South to southwest Winds near 5 Mph. Chance of rain 20 percent.

Tonight 31 May Monroe Lower Keys

Partly cloudy. Lows in the lower 80s. South to southwest Winds near 5 Mph.

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Key West - South Side Temperature Statistics

May Temperature

Key West International Airport (1.9 miles)

  • Lowest 6 May, 2026

    76.6 °F

  • Average May

    85.3 °F

  • Highest 8 May, 2026

    92.6 °F

Climate (2021–Present)

Key West International Airport (1.9 miles)

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  • Average Low 2021–2026

    75.6 °F

  • Average 2021–2026

    79.6 °F

  • Average High 2021–2026

    84 °F
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