National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Witham Field Airport (KSUA)

Lat: 27.18°NLon: 80.23°WElev: 13ft.

Partly Cloudy

24°C

75°F

Humidity 94%
Wind Speed Vrbl 9 km/h
Barometer 30.09 in
Dewpoint 23°C (73°F)
Visibility 11 km
Last update 12 Jul 9:50 pm EDT
Extended Forecast for

Port St. Lucie FL

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 23. Southwest wind 5 to 10 km/h. Chance of precipitation is 20%.

    Low: 23 °C

    Slight Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 33. Heat index values as high as 39. West southwest wind 5 to 10 km/h becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 33 °C

    Chance
    T-storms then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 23. South wind 5 to 10 km/h becoming west southwest after midnight. Chance of precipitation is 60%. New rainfall amounts between 7.5 mm and 1 cm possible.

    Low: 23 °C

    T-storms
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 11am, then showers and thunderstorms likely after 11am. Mostly cloudy, with a high near 32. West southwest wind 5 to 10 km/h becoming north northeast in the afternoon. Chance of precipitation is 70%.

    High: 32 °C

    T-storms
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 23. South southwest wind 5 to 10 km/h.

    Low: 23 °C

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then showers and thunderstorms likely after 2pm. Partly sunny, with a high near 31. Southeast wind 5 to 10 km/h increasing to 10 to 15 km/h in the afternoon. Winds could gust as high as 30 km/h. Chance of precipitation is 70%.

    High: 31 °C

    Showers
    Likely then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 23. South southeast wind 10 to 15 km/h. Chance of precipitation is 60%.

    Low: 23 °C

    T-storms
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 8am, then showers and thunderstorms likely after 8am. Partly sunny, with a high near 31. South southeast wind 10 to 20 km/h, with gusts as high as 30 km/h. Chance of precipitation is 70%.

    High: 31 °C

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 24. Southeast wind 10 to 15 km/h.

    Low: 24 °C

    Chance
    T-storms

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 23. Southwest wind 5 to 10 km/h. Chance of precipitation is 20%.
Sunday
Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 33. Heat index values as high as 39. West southwest wind 5 to 10 km/h becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.
Sunday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 23. South wind 5 to 10 km/h becoming west southwest after midnight. Chance of precipitation is 60%. New rainfall amounts between 7.5 mm and 1 cm possible.
Monday
Showers likely and possibly a thunderstorm before 11am, then showers and thunderstorms likely after 11am. Mostly cloudy, with a high near 32. West southwest wind 5 to 10 km/h becoming north northeast in the afternoon. Chance of precipitation is 70%.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 23. South southwest wind 5 to 10 km/h.
Tuesday
Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then showers and thunderstorms likely after 2pm. Partly sunny, with a high near 31. Southeast wind 5 to 10 km/h increasing to 10 to 15 km/h in the afternoon. Winds could gust as high as 30 km/h. Chance of precipitation is 70%.
Tuesday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 23. South southeast wind 10 to 15 km/h. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm before 8am, then showers and thunderstorms likely after 8am. Partly sunny, with a high near 31. South southeast wind 10 to 20 km/h, with gusts as high as 30 km/h. Chance of precipitation is 70%.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 24. Southeast wind 10 to 15 km/h.
Thursday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 32. Southeast wind 10 to 15 km/h. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 24. Southeast wind 10 to 15 km/h. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 32. East southeast wind 10 to 15 km/h.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 24. East southeast wind 5 to 10 km/h.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 33. East wind 5 to 15 km/h.
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ABOUT THIS FORECAST

 
Point Forecast:
Port St. Lucie FL
 27.27°N 80.36°W (Elev. 16 m)
Last Update:
9:14 pm EDT Jul 12, 2025
Forecast Valid:
9pm EDT Jul 12, 2025-6pm EDT Jul 19, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation