Fiesta Key Weather Forecast

    • 67
    • 74

    Rain Showers Likely

    • 66
    • 76

    Chance Rain Showers

    • 68
    • 76

    Slight Chance Rain Showers

    • 70
    • 75

    Mostly Sunny

    • 71
    • 77

    Mostly Sunny

    • 71
    • 77

    Mostly Sunny

Today 18 Mar Monroe Middle Keys

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Breezy at Times. Highs in the mid 70s. North to northeast Winds 15 to 20 Mph, briefly decreasing to near 15 Mph in the afternoon. Chance of rain 40 percent.

Tonight 18 Mar Monroe Middle Keys

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Breezy, becoming windy. Lows in the upper 60s. North to northeast Winds 15 to 20 Mph, increasing to near 20 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fiesta Key Temperature Statistics

March Temperature

The Florida Keys - Marathon International Airport (17.4 miles)

  • Lowest 1 March, 2026

    70.6 °F

  • Average March

    78.2 °F

  • Highest 6 March, 2026

    83.6 °F

Climate (2021–Present)

The Florida Keys - Marathon International Airport (17.4 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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