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.

A Few Clouds

86°F

30°C

Humidity 75%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 77°F (25°C)
Visibility 7.00 mi
Heat Index97°F (36°C)
Last update 30 Aug 3:47 pm EDT
Extended Forecast for

Port St. Lucie-River Park FL

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a steady temperature around 85. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    T-storms
    Likely

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 76. East northeast wind around 5 mph becoming calm.

    Low: 76 °F

    Chance
    T-storms

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 90. Heat index values as high as 102. Light north northeast wind becoming east northeast 5 to 10 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: 90 °F

    Showers
    Likely then
    T-storms
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 76. Calm wind.

    Low: 76 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 91. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%.

    High: 91 °F

    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 76. East wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 76 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms likely after 2pm. Partly sunny, with a high near 91. Light east wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 70%.

    High: 91 °F

    Showers
    Likely then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 77. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 77 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm, then showers and thunderstorms after 2pm. High near 91. East wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 91 °F

    Showers
    Likely then
    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a steady temperature around 85. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 76. East northeast wind around 5 mph becoming calm.
Monday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 90. Heat index values as high as 102. Light north northeast wind becoming east northeast 5 to 10 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.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 76. Calm wind.
Tuesday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 91. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%.
Tuesday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 76. East wind around 5 mph becoming calm. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms likely after 2pm. Partly sunny, with a high near 91. Light east wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 70%.
Wednesday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 77. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm, then showers and thunderstorms after 2pm. High near 91. East wind 5 to 10 mph. Chance of precipitation is 80%.
Thursday Night
Showers and thunderstorms, mainly before 8pm. Low around 76. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Friday
Showers and thunderstorms. High near 91. Southeast wind 5 to 10 mph. Chance of precipitation is 80%.
Friday Night
Showers and thunderstorms. Low around 75. Southeast wind around 5 mph becoming calm. Chance of precipitation is 80%.
Saturday
Showers and thunderstorms likely. Mostly sunny, with a high near 91. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
Port St. Lucie-River Park FL
 27.31°N 80.33°W (Elev. 7 ft)
Last Update:
2:40 pm EDT Aug 30, 2026
Forecast Valid:
3pm EDT Aug 30, 2026-6pm EDT Sep 5, 2026
 
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Additional Resources

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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