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

84°F

29°C

Humidity 84%
Wind Speed S 5 mph
Barometer 30.00 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 12 Aug 8:48 pm EDT
Extended Forecast for

Port St. Lucie FL

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 75. South wind around 5 mph becoming calm.

    Low: 75 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny, with a high near 94. Heat index values as high as 106. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 75. Southeast wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 93. Heat index values as high as 105. Light and variable wind becoming east 5 to 10 mph in the afternoon.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76. East southeast wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Light southeast wind becoming east southeast 5 to 10 mph in the afternoon.

    High: 93 °F

    Chance
    T-storms

  • Saturday Night

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

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon.

    High: 94 °F

    Sunny

  • Sunday Night

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

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 75. South wind around 5 mph becoming calm.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny, with a high near 94. Heat index values as high as 106. Calm wind becoming east northeast around 5 mph in the afternoon.
Thursday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 75. Southeast wind around 5 mph becoming calm in the evening.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 93. Heat index values as high as 105. Light and variable wind becoming east 5 to 10 mph in the afternoon.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76. East southeast wind around 5 mph becoming calm in the evening.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Light southeast wind becoming east southeast 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 75. East southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 75. East southeast wind around 5 mph becoming calm in the evening.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny and hot, with a high near 95. Calm wind becoming north northwest around 5 mph in the afternoon.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 96. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77. East southeast wind around 5 mph becoming calm in the evening.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.
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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:
7:29 pm EDT Aug 12, 2026
Forecast Valid:
9pm EDT Aug 12, 2026-6pm EDT Aug 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation