Grand Isle Weather Forecast

    • 77
    • 92

    Slight Chance Thunderstorms

    • 77
    • 92

    Chance Thunderstorms

    • 78
    • 93

    Chance Thunderstorms

    • 77
    • 92

    Chance Thunderstorms

    • 77
    • 92

    Slight Chance Thunderstorms

    • 77
    • 92

    Partly Sunny

Today 18 Jul Mainland Southern Brevard

Partly sunny late in the Morning, then considerable cloudiness with a chance of Showers and Thunderstorms late in the afternoon and towards Sunset. Highs in the lower 90s. Southeast Winds 10 to 15 Mph. Chance of rain 40 percent. Heat index Values up to 105.

Tonight 18 Jul Mainland Southern Brevard

Partly cloudy. Lows in the upper 70s. South Winds 5 to 10 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 12 July, 2026

    75.2 °F

  • Average July

    83.3 °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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