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

79°F

26°C

Humidity 94%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 10 Aug 6:47 am EDT
Extended Forecast for

Port St. Lucie FL

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 93. Heat index values as high as 105. Light east southeast wind becoming east 5 to 10 mph in the morning.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 76. East southeast wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 103. Calm wind becoming east around 5 mph in the afternoon.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

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

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Calm wind becoming east southeast around 5 mph.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday 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

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Calm wind becoming southwest around 5 mph.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, 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

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Light and variable wind becoming east 5 to 10 mph in the afternoon.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 93. Heat index values as high as 105. Light east southeast wind becoming east 5 to 10 mph in the morning.
Tonight
Mostly clear, with a low around 76. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 103. Calm wind becoming east around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 75. East southeast wind around 5 mph becoming calm in the evening.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Calm wind becoming east southeast around 5 mph.
Wednesday 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.
Thursday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Calm wind becoming southwest around 5 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76. East southeast wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Light and variable wind becoming east 5 to 10 mph in the afternoon.
Friday Night
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 east northeast wind becoming east southeast 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 76. East southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 93. Calm wind becoming east around 5 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Port St. Lucie FL
 27.27°N 80.36°W (Elev. 16 ft)
Last Update:
7:14 am EDT Aug 10, 2026
Forecast Valid:
7am EDT Aug 10, 2026-6pm EDT Aug 16, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation