Grassy Key - North Side Weather Forecast

    • 69
    • 78

    Increasing Clouds

    • 69
    • 80

    Mostly Sunny

    • 69
    • 80

    Slight Chance Rain Showers

    • 70
    • 79

    Partly Sunny

    • 69
    • 80

    Partly Sunny

    • 70
    • 80

    Mostly Sunny

Today 26 Feb Monroe Middle Keys

Mostly sunny. Highs in the upper 70s. East to southeast Winds near 10 Mph.

Tonight 26 Feb Monroe Middle Keys

Partly cloudy with a slight chance of Showers. Lows in the upper 60s. East to southeast Winds 5 to 10 Mph. Chance of rain 10 percent.

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Grassy Key - North Side Temperature Statistics

February Temperature

The Florida Keys - Marathon International Airport (7.5 miles)

  • Lowest 1 February, 2026

    44.7 °F

  • Average February

    67.5 °F

  • Highest 22 February, 2026

    82 °F

Climate (2021–Present)

The Florida Keys - Marathon International Airport (7.5 miles)

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  • Average Low 2021–2026

    75.3 °F

  • Average 2021–2026

    80 °F

  • Average High 2021–2026

    85.1 °F
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