Grand Isle Weather Forecast

    • 65
    • 78

    Slight Chance Thunderstorms

    • 64
    • 78

    Mostly Sunny

    • 64
    • 78

    Mostly Cloudy

    • 65
    • 79

    Partly Sunny

    • 65
    • 82

    Partly Sunny

    • 66
    • 84

    Partly Sunny

Today 20 Apr Mainland Southern Brevard

Considerable cloudiness late in the morning then becoming partly sunny. A slight chance of Showers and Thunderstorms. Breezy. Highs in the upper 70s. Northeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 20 Apr Mainland Southern Brevard

A slight chance of Thunderstorms after midnight. Mostly cloudy with a slight chance of Showers. Breezy. Lows around 70. North Winds 5 to 10 Mph becoming northeast 15 to 20 Mph early in the morning. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Isle Temperature Statistics

April Temperature

Cocoa - Patrick Air Force Base (6.2 miles)

  • Lowest 9 April, 2026

    67.8 °F

  • Average April

    74.2 °F

  • Highest 5 April, 2026

    81.7 °F

Climate (2021–Present)

Cocoa - Patrick Air Force Base (6.2 miles)

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  • Average Low 2021–2026

    69.8 °F

  • Average 2021–2026

    75 °F

  • Average High 2021–2026

    81.2 °F
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