Port St Lucie - River Park Weather Forecast

    • 74
    • 87

    Chance Thunderstorms

    • 74
    • 86

    Rain Showers Likely

    • 73
    • 84

    Rain Showers Likely

    • 73
    • 87

    Rain Showers Likely

    • 73
    • 88

    Rain Showers Likely

    • 74
    • 88

    Rain Showers Likely

Today 16 Sep Coastal St. Lucie

Partly sunny. A slight chance of Showers and Thunderstorms late in the Morning, then a chance of Showers and Thunderstorms late in the afternoon and towards Sunset. Highs in the mid 80s. Northeast Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 16 Sep Coastal St. Lucie

Partly cloudy with a chance of Showers and Thunderstorms. Lows in the mid 70s. East Winds 5 to 10 Mph. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Port St Lucie - River Park Temperature Statistics

September Temperature

Witham Field Airport (11.8 miles)

  • Lowest 1 September, 2025

    75.2 °F

  • Average September

    80.2 °F

  • Highest 7 September, 2025

    91.4 °F

Climate (2020–Present)

Witham Field Airport (11.8 miles)

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

  • Average Low 2020–2025

    69.5 °F

  • Average 2020–2025

    74.6 °F

  • Average High 2020–2025

    83 °F
Get WillyWeather+ to remove ads