Fort Pierce South Weather Forecast

    • 76
    • 93

    Partly Sunny

    • 76
    • 92

    Slight Chance Thunderstorms

    • 75
    • 91

    Chance Thunderstorms

    • 75
    • 93

    Sunny

    • 76
    • 93

    Mostly Sunny

    • 76
    • 93

    Mostly Sunny

    • 76
    • 93

    Mostly Sunny

Today 13 Aug Coastal St. Lucie

Mostly sunny in the Afternoon, then partly sunny with a slight chance of Showers and Thunderstorms late in the afternoon and towards Sunset. Highs in the lower 90s. East Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 105.

Tonight 13 Aug Coastal St. Lucie

Partly cloudy. Lows in the upper 70s. South Winds around 5 Mph.

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Fort Pierce South Temperature Statistics

August Temperature

Fort Pierce, St. Lucie County International Airport (5.6 miles)

  • Lowest 2 August, 2026

    74.6 °F
  • Average August

    83.4 °F
  • Highest 1 August, 2026

    93.7 °F

Climate (2021–2026)

Fort Pierce, St. Lucie County International Airport (5.6 miles)

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  • Average Low 2021–2026

    65.9 °F
  • Average 2021–2026

    74.7 °F
  • Average High 2021–2026

    83.6 °F
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