Grand Isle Weather Forecast

    • 78
    • 88

    Slight Chance Thunderstorms

    • 76
    • 89

    Chance Thunderstorms

    • 75
    • 89

    Rain Showers Likely

    • 74
    • 86

    Rain Showers

    • 73
    • 85

    Rain Showers

    • 73
    • 85

    Rain Showers

    • 76
    • 85

    Rain Showers Likely

Today 3 Oct Mainland Southern Brevard

Partly cloudy. A chance of Showers and a slight chance of Thunderstorms late in the Morning, then Showers likely and a chance of Thunderstorms late in the afternoon and towards Sunset. Highs in the upper 80s. Chance of rain 60 percent.

Tonight 3 Oct Mainland Southern Brevard

A slight chance of Thunderstorms through early morning. Partly cloudy with a slight chance of Showers. Lows in the upper 70s. Southeast Winds 5 to 10 Mph. 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

    80.4 °F

  • Highest 1 October, 2026

    85.3 °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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