St. Lucie County International Airport Weather Forecast

    • 74
    • 88

    Slight Chance Thunderstorms

    • 74
    • 88

    Chance Thunderstorms

    • 73
    • 87

    Rain Showers Likely

    • 73
    • 85

    Thunderstorms Likely

    • 74
    • 87

    Thunderstorms Likely

    • 74
    • 88

    Thunderstorms Likely

    • 74
    • 88

    Chance Thunderstorms

Today 15 Sep Coastal St. Lucie

Mostly sunny early in the afternoon then becoming partly sunny. A slight chance of Showers and Thunderstorms. Highs in the upper 80s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 15 Sep Coastal St. Lucie

Partly cloudy. A slight chance of Showers and Thunderstorms early in the evening. Lows in the mid 70s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St. Lucie County International Airport Temperature Statistics

September Temperature

Fort Pierce, St. Lucie County International Airport (0 miles)

  • Lowest 12 September, 2025

    72 °F

  • Average September

    79.6 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Fort Pierce, St. Lucie County International Airport (0 miles)

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  • Average Low 2020–2025

    66.1 °F

  • Average 2020–2025

    74.7 °F

  • Average High 2020–2025

    83.5 °F
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