10-Day Weather Forecast - Port Saint Lucie, FL

Widespread frost in the morning. Partly sunny. Highs in the upper 60s. North winds around 5 mph becoming northeast in the afternoon.

Partly cloudy. Not as cool. Lows in the lower 40s. Light and variable winds.

Mostly sunny. Highs in the mid 70s. West winds around 5 mph becoming southwest in the afternoon.

Clear in the evening then partly cloudy with a slight chance of showers after midnight. Lows in the upper 40s. Southwest winds around 5 mph. Chance of rain 20 percent.

Considerable cloudiness with a chance of showers in the morning then partly sunny with a slight chance of afternoon showers. Highs in the upper 60s. Chance of rain 30 percent.

Clear cooler. Lows in the upper 30s.

Sunny. Highs in the mid 60s.

Clear. Lows around 40.

Sunny. Highs in the lower 70s.

Clear. Lows in the lower 40s.

Sunny. Highs in the mid 70s.

Clear. Lows in the mid 40s.

Sunny. Highs in the mid 70s.

Clear. Low temperature around 53F. Dew point will be around 52F with an average humidity of 89%. Winds will be 5 mph from the NE.

Mostly sunny. High temperature around 68F. Dew point will be around 54F with an average humidity of 76%. Winds will be 7 mph from the NE.

Mostly clear. Low temperature around 55F. Dew point will be around 55F with an average humidity of 91%. Winds will be 6 mph from the E.

Sunny. High temperature around 70F. Dew point will be around 58F with an average humidity of 79%. Winds will be 8 mph from the E.

Mostly clear. Low temperature around 58F. Dew point will be around 58F with an average humidity of 94%. Winds will be 7 mph from the E.