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

91°F

33°C

Humidity 63%
Wind Speed E 10 mph
Barometer 30.10 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 12 Jul 3:47 pm EDT
Extended Forecast for

Port St. Lucie FL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 96. Heat index values as high as 106. East wind around 5 mph.

    High: 96 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 76. South wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Some of the storms could produce heavy rainfall. Increasing clouds and hot, with a high near 97. Heat index values as high as 107. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 97 °F

    Sunny then
    Heavy Rain

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms before 10pm. Some of the storms could produce heavy rainfall. Partly cloudy, with a low around 75. South southwest wind around 5 mph becoming calm.

    Low: 75 °F

    Heavy Rain
    then Partly
    Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 10 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

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. Calm wind becoming east around 5 mph in the afternoon.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 76. East southeast wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and hot, with a high near 97. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 97 °F

    Hot

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 96. Heat index values as high as 106. East wind around 5 mph.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 76. South wind around 5 mph becoming calm. Chance of precipitation is 30%.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Some of the storms could produce heavy rainfall. Increasing clouds and hot, with a high near 97. Heat index values as high as 107. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
A 30 percent chance of showers and thunderstorms before 10pm. Some of the storms could produce heavy rainfall. Partly cloudy, with a low around 75. South southwest wind around 5 mph becoming calm.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96. Calm wind becoming east southeast around 5 mph in the afternoon.
Tuesday Night
A 10 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.
Wednesday
Sunny and hot, with a high near 96. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 76. East southeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 97. Calm wind becoming north northeast around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 96. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night
A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. South southeast wind around 5 mph becoming calm in the evening.
Saturday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 96. Light southwest wind becoming south 5 to 10 mph in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port St. Lucie FL
 27.29°N 80.36°W (Elev. 13 ft)
Last Update:
2:40 pm EDT Jul 12, 2026
Forecast Valid:
3pm EDT Jul 12, 2026-6pm EDT Jul 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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