Florida · NWS MLB office

Port St. Lucie, FL weather

It is 79°F and mostly cloudy at Witham Field Airport as of Oct 28, 4:55 AM EDT. Overnight: Rain Showers Likely, low near 74°F, 65% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 2:39 AM EDT.

Updated Oct 28, 5:14 AM EDT (snapshot)

Current conditions

Temperature

79°F

Mostly Cloudy · feels like 83°F

Wind

NNE 15 mph, gusts 22 mph

Humidity 94% · dew point 77°F

Pressure · visibility

29.88 inHg

Visibility 7 mi

Observed at Witham Field Airport (KSUA), Oct 28, 4:55 AM EDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Port St. Lucie forecast zone right now.

Around the NWS MLB forecast area

5 active alerts cover zones served by the MLB office near Port St. Lucie:

  • Flood Warning (2)
  • Coastal Flood Warning
  • Rip Current Statement
  • High Surf Advisory

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. Florida has 17 active alerts: see them all.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Port St. Lucie (local time)
TimeTempForecastPrecip. chanceWind
Wed 7 AM75°FRain Showers Likely56%NE 10 mph
Wed 8 AM76°FChance Rain Showers51%NE 10 mph
Wed 9 AM78°FChance Rain Showers49%NE 10 mph
Wed 10 AM81°FChance Rain Showers47%NE 15 mph
Wed 11 AM82°FChance Showers And Thunderstorms45%NE 15 mph
Wed 12 PM83°FChance Showers And Thunderstorms43%NE 15 mph
Wed 1 PM84°FChance Showers And Thunderstorms41%NE 15 mph
Wed 2 PM84°FChance Showers And Thunderstorms38%NE 15 mph
Wed 3 PM84°FChance Showers And Thunderstorms35%NE 15 mph
Wed 4 PM84°FChance Showers And Thunderstorms31%ENE 15 mph
Wed 5 PM82°FChance Showers And Thunderstorms28%ENE 10 mph
Wed 6 PM81°FChance Showers And Thunderstorms25%ENE 10 mph
Wed 7 PM80°FSlight Chance Showers And Thunderstorms21%ENE 10 mph
Wed 8 PM77°FSlight Chance Showers And Thunderstorms18%ENE 5 mph
Wed 9 PM76°FSlight Chance Showers And Thunderstorms16%ENE 5 mph
Wed 10 PM76°FPartly Cloudy13%NE 5 mph
Wed 11 PM76°FMostly Clear10%NE 5 mph
Thu 12 AM76°FPartly Cloudy10%NE 5 mph
Thu 1 AM76°FMostly Clear11%NE 5 mph
Thu 2 AM76°FPartly Cloudy11% 0 mph
Thu 3 AM74°FPartly Cloudy10% 0 mph
Thu 4 AM74°FPartly Cloudy9% 0 mph
Thu 5 AM74°FPartly Cloudy9% 0 mph
Thu 6 AM74°FSunny9% 0 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Port St. Lucie can differ.

7-day forecast

Overnight

Low 74°F

Rain showers likely. Mostly cloudy, with a low around 74. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday

High 85°F·Low 73°F

Rain showers likely before 11am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 85. Northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

Wednesday Night: A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 10pm. Partly cloudy, with a low around 73. Northeast wind 0 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Thursday

High 86°F·Low 72°F

A slight chance of rain showers between 1pm and 2pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Northeast wind 0 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Thursday Night: A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 72. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Friday

High 85°F·Low 72°F

A chance of rain showers between 8am and 2pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

Friday Night: A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 72. East northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

Saturday

High 85°F·Low 72°F

A chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 85. East northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

Saturday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 72. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

Sunday

High 85°F·Low 69°F

Showers and thunderstorms likely. Partly sunny, with a high near 85. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

Sunday Night: Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 69. East wind 0 to 10 mph. Chance of precipitation is 70%.

Monday

High 85°F·Low 69°F

A chance of showers and thunderstorms. Mostly sunny, with a high near 85. East northeast wind 0 to 10 mph. Chance of precipitation is 40%.

Monday Night: A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 69. Northeast wind 0 to 5 mph. Chance of precipitation is 40%.

Tuesday

High 85°F

A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. North northeast wind 0 to 10 mph.

Nearby cities

Other cities in St. Lucie County

See every city we cover in Florida, or check all active alerts.

About this forecast

Forecast office
Port St. Lucie is served by the National Weather Service MLB forecast office, forecast zone FLZ259, county zone FLC111.
Location used
The Census Bureau's internal point for Port St. Lucie (27.2806, -80.3883), in St. Lucie County. Population: 258,575 (2024 estimate), number 6 of the 120 Florida cities on this site.
Radar
Nearest NWS radar: KMLB. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/27.2806,-80.3883 (forecast issued Oct 28, 2:39 AM EDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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