Grand Isle Weather Forecast

    • 74
    • 92

    Thunderstorms Likely

    • 76
    • 92

    Chance Thunderstorms

    • 77
    • 94

    Slight Chance Thunderstorms

    • 77
    • 93

    Slight Chance Thunderstorms

    • 77
    • 93

    Chance Thunderstorms

    • 77
    • 93

    Chance Thunderstorms

Today 20 Jun Mainland Southern Brevard

Partly sunny with a chance of Showers and Thunderstorms late in the Morning, then considerable cloudiness with Showers and Thunderstorms likely late in the afternoon and towards Sunset. Highs in the lower 90s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent. Heat index Values up to 104.

Tonight 20 Jun Mainland Southern Brevard

Mostly cloudy with a slight chance of Showers and Thunderstorms in the late evening and early Morning, then partly cloudy after midnight. Lows in the mid 70s. Southwest Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Isle Temperature Statistics

June Temperature

Cocoa - Patrick Air Force Base (6.2 miles)

  • Lowest 3 June, 2026

    75.4 °F

  • Average June

    82.1 °F

  • Highest 15 June, 2026

    95 °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

    81.2 °F
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