Grand Isle Weather Forecast

    • 77
    • 89

    Chance Thunderstorms

    • 78
    • 88

    Chance Thunderstorms

    • 79
    • 88

    Slight Chance Thunderstorms

    • 78
    • 88

    Chance Thunderstorms

    • 76
    • 86

    Rain Showers Likely

    • 75
    • 87

    Rain Showers Likely

Today 23 May Mainland Southern Brevard

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the upper 80s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent. Heat index Values up to 101.

Tonight 23 May Mainland Southern Brevard

Partly cloudy. A slight chance of Showers after midnight. 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

May Temperature

Cocoa - Patrick Air Force Base (6.2 miles)

  • Lowest 7 May, 2026

    71.1 °F

  • Average May

    80.4 °F

  • Highest 10 May, 2026

    91.8 °F

Climate (2021–Present)

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

    81.2 °F
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