Avalon State Park Weather Forecast

    • 77
    • 83

    Chance Thunderstorms

    • 76
    • 83

    Rain Showers Likely

    • 76
    • 83

    Thunderstorms Likely

    • 74
    • 84

    Rain Showers

    • 75
    • 86

    Thunderstorms Likely

    • 75
    • 85

    Rain Showers

Today 18 Sep Coastal St. Lucie

Partly sunny with a chance of Thunderstorms. A chance of Showers late in the Morning, then Showers likely late in the afternoon and towards Sunset. Highs in the mid 80s. Chance of rain 70 percent.

Tonight 18 Sep Coastal St. Lucie

Partly cloudy. A chance of Showers and Thunderstorms early in the Evening, then a slight chance of Showers and Thunderstorms in the late evening and overnight. Lows in the mid 70s. Northeast Winds 5 to 10 Mph becoming north around 5 Mph late. Chance of rain 30 percent.

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Avalon State Park Temperature Statistics

September Temperature

Fort Pierce, St. Lucie County International Airport (4.3 miles)

  • Lowest 8 September, 2026

    72.6 °F

  • Average September

    82.6 °F

  • Highest 5 September, 2026

    94.6 °F

Climate (2021–2026)

Fort Pierce, St. Lucie County International Airport (4.3 miles)

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  • Average Low 2021–2026

    65.9 °F

  • Average 2021–2026

    74.7 °F

  • Average High 2021–2026

    83.7 °F
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