Grand Isle Weather Forecast

    • 71
    • 88

    Rain Showers Likely

    • 69
    • 85

    Mostly Sunny

    • 72
    • 86

    Mostly Sunny

    • 73
    • 84

    Mostly Sunny

    • 74
    • 85

    Slight Chance Rain Showers

    • 73
    • 85

    Chance Rain Showers

Today 11 Oct Mainland Southern Brevard

Mostly cloudy with Showers likely and a chance of Thunderstorms. Highs in the upper 80s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent. Heat index Values up to 103.

Tonight 11 Oct Mainland Southern Brevard

A slight chance of Thunderstorms in the late evening and early morning. Partly cloudy with a slight chance of Showers. Lows in the lower 70s. Southwest Winds around 5 Mph becoming northwest 5 to 10 Mph after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Isle Temperature Statistics

October Temperature

Cocoa - Patrick Air Force Base (6.2 miles)

  • Lowest 1 October, 2026

    74.7 °F

  • Average October

    81.9 °F

  • Highest 4 October, 2026

    89.1 °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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