7-Day Zone Forecast for Coastal St. Lucie (Text-Only)
NWS Forecast for: Coastal St. Lucie
Issued by: National Weather Service Melbourne, FL
Last Update: 345 AM EDT Wed Aug 26 2026


Today: Partly sunny late in the morning then considerable cloudiness. A chance of showers and thunderstorms. Highs around 90. Southeast winds 5 to 10 mph increasing to 10 to 15 mph late in the afternoon and towards sunset. Chance of rain 50 percent. Heat index values up to 102.

Tonight: Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 70s. South winds 5 to 10 mph. Chance of rain 20 percent.

Thursday: Partly sunny. A chance of showers and thunderstorms late in the morning, then showers and thunderstorms likely late in the afternoon and towards sunset. Highs in the upper 80s. Southeast winds 5 to 10 mph. Chance of rain 60 percent. Heat index values up to 103.

Thursday Night: Partly cloudy. A chance of showers and thunderstorms in the late evening and early morning. Lows in the upper 70s. South winds 5 to 10 mph. Chance of rain 30 percent.

Friday: Partly sunny. A slight chance of showers and thunderstorms late in the morning, then showers and thunderstorms likely late in the afternoon and towards sunset. Highs in the upper 80s. Southeast winds 5 to 10 mph. Chance of rain 60 percent. Heat index values up to 105.

Friday Night: Partly cloudy. A slight chance of showers and thunderstorms in the late evening and early morning. Lows in the upper 70s. Chance of rain 20 percent.

Saturday: Partly sunny. A chance of showers and thunderstorms late in the morning, then showers and thunderstorms likely late in the afternoon and towards sunset. Highs in the upper 80s. Chance of rain 60 percent.

Saturday Night: Partly cloudy. A chance of showers and thunderstorms in the late evening and early morning, then a slight chance of showers and thunderstorms after midnight. Lows in the upper 70s. Chance of rain 40 percent.

Sunday: Partly cloudy with showers likely. A chance of thunderstorms late in the morning, then thunderstorms likely late in the afternoon and towards sunset. Highs in the upper 80s. Chance of rain 70 percent.

Sunday Night: Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the upper 70s. Chance of rain 20 percent.

Monday: Partly sunny. A chance of showers and thunderstorms late in the morning, then showers and thunderstorms likely late in the afternoon and towards sunset. Highs in the upper 80s. Chance of rain 70 percent.

Monday Night: Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the upper 70s. Chance of rain 20 percent.

Tuesday: Partly cloudy with showers likely. A chance of thunderstorms late in the morning, then thunderstorms likely late in the afternoon and towards sunset. Highs in the upper 80s. Chance of rain 70 percent.







Zone Forecast: Coastal St. Lucie

Visit your local NWS office at: https://www.weather.gov/mlb