Grand Harbor Weather Forecast

    • 75
    • 90

    Chance Thunderstorms

    • 76
    • 90

    Slight Chance Thunderstorms

    • 75
    • 92

    Slight Chance Thunderstorms

    • 71
    • 90

    Mostly Sunny

    • 70
    • 87

    Mostly Sunny

    • 71
    • 87

    Partly Sunny

    • 71
    • 87

    Partly Sunny

Today 21 Sep Coastal Bay

Sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. Northeast Winds around 5 Mph, becoming southeast this afternoon. Chance of rain 50 percent.

Tonight 21 Sep Coastal Bay

Mostly cloudy with a chance of Showers and Thunderstorms this Evening, then partly cloudy after midnight. Patchy fog after midnight. Lows in the lower 70s. South Winds around 5 Mph, becoming northeast after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Harbor Temperature Statistics

September Temperature

Tyndall Air Force Base (11.8 miles)

  • Lowest 17 September, 2026

    72.7 °F

  • Average September

    82.7 °F

  • Highest 15 September, 2026

    94.3 °F

Climate (2021–2026)

Tyndall Air Force Base (11.8 miles)

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  • Average Low 2021–2026

    62.9 °F

  • Average 2021–2026

    70.3 °F

  • Average High 2021–2026

    78.1 °F
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