Grand Isle Weather Forecast

    • 76
    • 94

    Chance Thunderstorms

    • 77
    • 95

    Chance Thunderstorms

    • 77
    • 95

    Chance Thunderstorms

    • 78
    • 94

    Slight Chance Thunderstorms

    • 78
    • 92

    Slight Chance Thunderstorms

    • 79
    • 93

    Slight Chance Thunderstorms

Today 11 Jul Mainland Southern Brevard

Sunny late in the morning then becoming partly sunny. A chance of Showers and Thunderstorms. Highs in the lower 90s. Southeast Winds 5 to 10 Mph. Chance of rain 40 percent. Heat index Values up to 109.

Tonight 11 Jul Mainland Southern Brevard

Mostly clear. Lows in the upper 70s. Southwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Isle Temperature Statistics

July Temperature

Cocoa - Patrick Air Force Base (6.2 miles)

  • Lowest 7 July, 2026

    77.5 °F

  • Average July

    84 °F

  • Highest 6 July, 2026

    91.6 °F

Climate (2021–2026)

Cocoa - Patrick Air Force Base (6.2 miles)

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  • Average Low 2021–2026

    69.9 °F

  • Average 2021–2026

    75.1 °F

  • Average High 2021–2026

    81.3 °F
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