Grassy Key Weather Forecast

    • 69
    • 76

    Mostly Cloudy

    • 69
    • 78

    Chance Rain Showers

    • 71
    • 79

    Chance Rain Showers

    • 69
    • 80

    Chance Rain Showers

    • 68
    • 79

    Slight Chance Rain Showers

    • 70
    • 80

    Mostly Sunny

Today 21 Feb Monroe Middle Keys

Mostly cloudy in the Morning, then becoming partly sunny. Breezy. Highs in the mid 70s. North to northeast Winds 15 to 20 Mph, becoming northeast.

Tonight 21 Feb Monroe Middle Keys

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grassy Key Temperature Statistics

February Temperature

The Florida Keys - Marathon International Airport (6.2 miles)

  • Lowest 1 February, 2025

    67.6 °F

  • Average February

    77.6 °F

  • Highest 7 February, 2025

    82.7 °F

Climate (2020–Present)

The Florida Keys - Marathon International Airport (6.2 miles)

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  • Average Low 2020–2025

    75.3 °F

  • Average 2020–2025

    80 °F

  • Average High 2020–2025

    85.3 °F
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