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.

Showers in Vicinity

77°F

25°C

Humidity 79%
Wind Speed E 16 G 26 mph
Barometer 30.01 in
Dewpoint 70°F (21°C)
Visibility 7.00 mi
Heat Index79°F (26°C)
Last update 13 Mar 2:47 pm EDT
Extended Forecast for

Port St. Lucie FL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. East wind around 10 mph.

    High: 80 °F

    Chance
    Showers

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 2pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Light southeast wind becoming south southeast 5 to 10 mph in the morning. Chance of precipitation is 70%.

    High: 84 °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 66. South southeast wind around 5 mph. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 85. South southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 85 °F

    Chance
    T-storms then
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Low around 53. Southwest wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 53 °F

    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 67. North wind around 10 mph, with gusts as high as 25 mph.

    High: 67 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. East wind around 10 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 66. Calm wind.
Saturday
Showers and thunderstorms likely, mainly before 2pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Light southeast wind becoming south southeast 5 to 10 mph in the morning. 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 66. South southeast wind around 5 mph. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 85. South southwest wind 5 to 15 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 53. Southwest wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 67. North wind around 10 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 53. North wind around 5 mph, with gusts as high as 20 mph.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 69. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58. North northeast wind around 5 mph, with gusts as high as 20 mph.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 74. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port St. Lucie FL
 27.27°N 80.36°W (Elev. 16 ft)
Last Update:
3:14 pm EDT Mar 13, 2026
Forecast Valid:
3pm EDT Mar 13, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation