Grand Isle Weather Forecast

    • 77
    • 95

    Chance Thunderstorms

    • 76
    • 95

    Chance Thunderstorms

    • 77
    • 94

    Slight Chance Thunderstorms

    • 77
    • 93

    Chance Thunderstorms

    • 77
    • 90

    Chance Thunderstorms

    • 77
    • 90

    Chance Thunderstorms

Today 22 Aug Mainland Southern Brevard

Partly sunny. A slight chance of Showers and Thunderstorms early in the Afternoon, then a chance of Showers and Thunderstorms late in the afternoon and towards Sunset. Highs in the mid 90s. Southwest Winds 5 to 10 Mph becoming southeast late in the afternoon and towards Sunset. Chance of rain 50 percent. Heat index Values up to 107.

Tonight 22 Aug Mainland Southern Brevard

Partly cloudy. A chance of Showers and a slight chance of Thunderstorms in the late evening and early morning. Lows in the upper 70s. Southwest Winds 5 to 10 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Isle Temperature Statistics

August Temperature

Cocoa - Patrick Air Force Base (6.2 miles)

  • Lowest 6 August, 2026

    76.6 °F

  • Average August

    84.1 °F

  • Highest 18 August, 2026

    97 °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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