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.

Fair

70°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 12 Mar 6:15 am EDT
Extended Forecast for

Port St. Lucie-River Park FL

  • Today

    Today: A 10 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 88. Light south wind becoming south southwest 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 66. West wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 25 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 11am. Cloudy, then gradually becoming mostly sunny, with a high near 79. East northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 81. Light east wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 60%.

    High: 81 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. South southeast wind 5 to 10 mph. Chance of precipitation is 70%.

    High: 83 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 65. South wind around 5 mph. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 84. South southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 84 °F

    Showers

Detailed Forecast

Today
A 10 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 88. Light south wind becoming south southwest 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 66. West wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 25 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers, with thunderstorms also possible after 11am. Cloudy, then gradually becoming mostly sunny, with a high near 79. East northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65. Calm wind.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 81. Light east wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. South southeast wind 5 to 10 mph. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 65. South wind around 5 mph. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 84. South southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Monday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Low around 58. Southwest wind around 5 mph. Chance of precipitation is 80%.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 70. North wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 54. North wind around 5 mph, with gusts as high as 20 mph.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 71. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Port St. Lucie-River Park FL
 27.31°N 80.36°W (Elev. 10 ft)
Last Update:
6:15 am EDT Mar 12, 2026
Forecast Valid:
6am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation