Spanish Harbor Key Weather Forecast

    • 59
    • 63

    Mostly Cloudy

    • 66
    • 72

    Partly Sunny

    • 70
    • 78

    Mostly Cloudy

    • 69
    • 78

    Chance Rain Showers

    • 71
    • 78

    Slight Chance Rain Showers

    • 72
    • 80

    Mostly Sunny

Today 19 Jan Monroe Lower Keys

Mostly sunny in the Morning, then becoming partly sunny. Windy in the morning. Cooler. Highs in the mid 60s. North Winds near 20 Mph, becoming north to northeast near 15 Mph.

Tonight 19 Jan Monroe Lower Keys

Mostly cloudy. Becoming windy. Lows near 60. North to northeast Winds near 15 Mph, increasing to near 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Spanish Harbor Key Temperature Statistics

January Temperature

The Florida Keys - Marathon International Airport (16.8 miles)

  • Lowest 16 January, 2026

    51.1 °F

  • Average January

    71.4 °F

  • Highest 9 January, 2026

    81 °F

Climate (2021–Present)

The Florida Keys - Marathon International Airport (16.8 miles)

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  • Average Low 2021–2026

    75.4 °F

  • Average 2021–2026

    80.1 °F

  • Average High 2021–2026

    85.1 °F
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