Key West - South Side Weather Forecast

    • 69
    • 75

    Chance Rain Showers

    • 71
    • 77

    Chance Rain Showers

    • 72
    • 78

    Mostly Sunny

    • 73
    • 79

    Mostly Sunny

    • 68
    • 79

    Mostly Sunny

    • 64
    • 76

    Partly Sunny

Today 21 Jan Monroe Lower Keys

Partly sunny with a slight chance of Showers. Windy Early, becoming breezy. Highs in the mid 70s. Northeast Winds near 20 Mph, decreasing to 15 to 20 Mph. Chance of rain 10 percent.

Tonight 21 Jan Monroe Lower Keys

Mostly cloudy with a chance of Showers. Breezy early. Lows in the upper 60s. Northeast Winds 15 to 20 Mph, decreasing to 10 to 15 Mph. Chance of rain 30 percent.

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Key West - South Side Temperature Statistics

January Temperature

Key West International Airport (1.9 miles)

  • Lowest 2 January, 2026

    55 °F

  • Average January

    70.5 °F

  • Highest 9 January, 2026

    80.1 °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

    83.9 °F
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