10-Day Weather Forecast - Port Saint Lucie, FL

Mostly sunny late in the morning then becoming partly sunny. A chance of showers and thunderstorms. Highs in the lower 90s. South winds around 5 mph becoming southeast 5 to 10 mph late in the afternoon and towards sunset. Chance of rain 50 percent. Heat index values up to 104.

Mostly clear. Lows in the mid 70s. Southeast winds around 5 mph in the late evening and early morning becoming light and variable.

Partly sunny with showers and thunderstorms likely. Highs in the lower 90s. East winds 5 to 10 mph. Chance of rain 70 percent. Heat index values up to 103.

Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 70s. East winds around 5 mph in the late evening and early morning becoming light and variable. Chance of rain 20 percent.

Partly cloudy with showers. A chance of thunderstorms late in the morning, then thunderstorms late in the afternoon and towards sunset. Highs in the lower 90s. East winds 5 to 10 mph. Chance of rain 70 percent. Heat index values up to 104.

Partly cloudy. Lows in the mid 70s.

Partly cloudy. Showers likely and a chance of thunderstorms late in the morning, then showers and thunderstorms late in the afternoon and towards sunset. Highs in the lower 90s. Chance of rain 70 percent.

Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 20 percent.

Showers likely and a chance of thunderstorms late in the morning, then showers and thunderstorms late in the afternoon and towards sunset. Highs around 90. Chance of rain 80 percent.

A slight chance of thunderstorms in the late evening and early morning. Partly cloudy with a slight chance of showers. Lows in the mid 70s. Chance of rain 20 percent.

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 around 90. Chance of rain 70 percent.

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

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 around 90. Chance of rain 70 percent.

Mostly clear with a 60% chance for rain and thunderstorms. Low temperature around 77F. Dew point will be around 77F with an average humidity of 94%. Winds will be 2 mph from the E.

Mostly sunny with a 70% chance for rain and thunderstorms. High temperature around 87F. Dew point will be around 79F with an average humidity of 87%. Winds will be 3 mph from the NE.

Mostly clear with a 55% chance for rain and thunderstorms. Low temperature around 76F. Dew point will be around 76F with an average humidity of 94%. Winds will be 2 mph from the W.

Sunny with a 55% chance for rain and thunderstorms. High temperature around 87F. Dew point will be around 78F with an average humidity of 86%. Winds will be 2 mph from the E.

Mostly clear with a 60% chance for rain and thunderstorms. Low temperature around 76F. Dew point will be around 76F with an average humidity of 93%. Winds will be 2 mph from the W.