Grand Isle Weather Forecast

    • 65
    • 83

    Chance Rain Showers

    • 64
    • 82

    Rain Showers Likely

    • 58
    • 75

    Chance Rain Showers

    • 58
    • 73

    Partly Sunny

    • 52
    • 75

    Mostly Sunny

    • 56
    • 75

    Mostly Sunny

    • 56
    • 78

    Partly Sunny

Today 6 Dec Mainland Southern Brevard

Partly sunny early in the Afternoon, then mostly sunny with a slight chance of afternoon Showers. Highs in the lower 80s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 6 Dec Mainland Southern Brevard

Considerable cloudiness. A slight chance of evening Showers. Patchy fog after midnight. Lows in the upper 60s. North Winds 5 to 10 Mph becoming northeast after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Isle Temperature Statistics

December Temperature

Cocoa - Patrick Air Force Base (6.2 miles)

  • Lowest 3 December, 2025

    64.6 °F

  • Average December

    71.4 °F

  • Highest 2 December, 2025

    83.1 °F

Climate (2020–Present)

Cocoa - Patrick Air Force Base (6.2 miles)

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  • Average Low 2020–2025

    69.8 °F

  • Average 2020–2025

    75 °F

  • Average High 2020–2025

    81.1 °F
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