St. Lucie Weather Forecast

    • 78
    • 88

    Chance Thunderstorms

    • 78
    • 90

    Thunderstorms Likely

    • 77
    • 89

    Thunderstorms Likely

    • 78
    • 88

    Thunderstorms Likely

    • 77
    • 89

    Thunderstorms Likely

    • 78
    • 89

    Thunderstorms Likely

Today 20 Aug Coastal St. Lucie

Mostly sunny late in the morning then becoming partly sunny. A chance of Showers and Thunderstorms. Highs in the lower 90s. Northwest Winds 10 to 15 Mph. Chance of rain 50 percent. Heat index Values up to 105.

Tonight 20 Aug Coastal St. Lucie

Mostly clear. A slight chance of Showers and Thunderstorms in the late evening and early morning. Lows in the mid 70s. West Winds 5 to 10 Mph. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

St. Lucie Temperature Statistics

August Temperature

Fort Pierce, St. Lucie County International Airport (2.5 miles)

  • Lowest 11 August, 2025

    70.6 °F

  • Average August

    83.3 °F

  • Highest 1 August, 2025

    95.6 °F

Climate (2020–Present)

Fort Pierce, St. Lucie County International Airport (2.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    66.1 °F

  • Average 2020–2025

    74.7 °F

  • Average High 2020–2025

    83.5 °F
Get WillyWeather+ to remove ads