Grand Isle Weather Forecast

    • 77
    • 90

    Chance Thunderstorms

    • 78
    • 91

    Chance Thunderstorms

    • 77
    • 91

    Slight Chance Thunderstorms

    • 77
    • 92

    Slight Chance Thunderstorms

    • 77
    • 91

    Slight Chance Thunderstorms

    • 77
    • 91

    Mostly Sunny

Today 8 Aug Mainland Southern Brevard

Partly sunny with a chance of Showers and Thunderstorms. Highs around 90. Southeast Winds 10 to 15 Mph. Chance of rain 50 percent. Heat index Values up to 105.

Tonight 8 Aug Mainland Southern Brevard

Partly cloudy. Lows in the upper 70s. Southeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Isle Temperature Statistics

August Temperature

Cocoa - Patrick Air Force Base (6.2 miles)

  • Lowest 6 August, 2026

    76.6 °F

  • Average August

    81.6 °F

  • Highest 1 August, 2026

    93 °F

Climate (2021–2026)

Cocoa - Patrick Air Force Base (6.2 miles)

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  • Average Low 2021–2026

    70 °F

  • Average 2021–2026

    75.2 °F

  • Average High 2021–2026

    81.3 °F
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