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.

Thunderstorm in Vicinity Rain

88°F

31°C

Humidity 75%
Wind Speed SE 16 mph
Barometer 29.98 in
Dewpoint 79°F (26°C)
Visibility 7.00 mi
Heat Index103°F (39°C)
Last update 15 Jul 6:47 pm EDT
Extended Forecast for

Port St. Lucie FL

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 73. South southeast wind around 5 mph.

    Low: 73 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after noon. Mostly sunny, with a high near 90. South southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76. Southeast wind around 5 mph.

    Low: 76 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely after 8am. Partly sunny, with a high near 91. Heat index values as high as 102. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 91 °F

    T-storms
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 75. Southeast wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. East southeast wind 5 to 10 mph.

    High: 91 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. East wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92. Calm wind becoming east around 5 mph in the afternoon.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 74. East wind around 5 mph becoming calm.

    Low: 74 °F

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 73. South southeast wind around 5 mph.
Wednesday
Showers and thunderstorms likely, mainly after noon. Mostly sunny, with a high near 90. South southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76. Southeast wind around 5 mph.
Thursday
Showers and thunderstorms likely after 8am. Partly sunny, with a high near 91. Heat index values as high as 102. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Thursday Night
Mostly cloudy, with a low around 75. Southeast wind around 5 mph becoming calm in the evening.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. East southeast wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 75. East wind around 5 mph becoming calm in the evening.
Saturday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 74. East wind around 5 mph becoming calm.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming east northeast around 5 mph in the afternoon.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. East southeast wind around 5 mph becoming calm in the evening.
Monday
Showers and thunderstorms likely. Mostly sunny, with a high near 92. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%.
Monday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 73. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Tuesday
Showers and thunderstorms likely. Mostly sunny, with a high near 91. Calm wind becoming east southeast around 5 mph in the afternoon. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port St. Lucie FL
 27.29°N 80.36°W (Elev. 13 ft)
Last Update:
6:29 pm EDT Jul 15, 2025
Forecast Valid:
7pm EDT Jul 15, 2025-6pm EDT Jul 22, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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