Port St. Lucie, FL Weather Tomorrow

Explore tomorrow's Port St. Lucie weather before planning your week with a detailed 5 day forecast featuring daily precipitation forecasts, changing sky conditions, daytime highs, overnight lows, Fahrenheit and Celsius temperatures, sunrise, sunset, wind chill, and local wind details for the Port St. Lucie area.
Updated: Fri Sep 11th 2026 1:00 PM EDT
Port St. Lucie, FL Weather – 9-11 – Overcast
94° / 76°
Overcast
Skies will be overcast in Port St. Lucie, with a high of 94°F and a low of 76°F. The chance of rain is 79% with an estimated 0.28in. Wind will be moderate, blowing around 12mph on average and gusts of 21mph at 3 PM. High humidity with average of 81% is anticipated, the maximum being 85% at 11 PM and 61% being its lowest at 3 PM. Barometric pressure is its highest of 30.02inHg at 11 PM, a lowest point of 29.97inHg at 5 PM with an avg 29.99inHg.
Port St. Lucie, FL Weather – 9-12 – Light Rain Shower
87° / 81°

Weather Tomorrow

Light Rain Shower
Rain showers are in the forecast for Port St. Lucie, with a high of 87°F and a low of 81°F. The chance of rain is 81% with an estimated 0.23in. Wind will be moderate, blowing around 11mph on average and gusts of 16.1mph at 12 AM. High humidity with average of 82% is anticipated, the maximum being 87% at 11 PM and 70% being its lowest at 3 PM. Barometric pressure is its highest of 30.07inHg at 11 PM, a lowest point of 29.98inHg at 3 AM with an avg 30.02inHg.
Port St. Lucie, FL Weather – 9-13 – Overcast
88° / 80°
Overcast
Overcast is in the forecast for Port St. Lucie, with a high of 88°F and a low of 80°F. The chance of rain is 83% with an estimated 0.27in. Wind will be moderate, blowing around 12mph on average and gusts of 22.6mph at 2 PM. High humidity with average of 81% is anticipated, the maximum being 89% at 4 AM and 66% being its lowest at 12 PM. Barometric pressure is its highest of 30.1inHg at 10 PM, a lowest point of 30.03inHg at 4 AM with an avg 30.06inHg.
Port St. Lucie, FL Weather – 9-14 – Sunny
87° / 80°
Sunny
Daytime highs will reach 87°F with lows dropping to 80°F in Port St. Lucie, where it will be sunny. Rainfall predicted to have a 65% chance with an estimated 0.14in. Wind will be moderate, blowing around 13mph on average and gusts of 21mph at 4 PM. The humidity will be on the higher side, averaging about 77%, the maximum being 85% at 4 AM and 67% being its lowest at 1 PM. Barometric pressure is its highest of 30.1inHg at 11 AM, a lowest point of 30.03inHg at 5 AM with an avg 30.06inHg.
Port St. Lucie, FL Weather – 9-15 – Scattered Showers
86° / 81°
Scattered Showers
In Port St. Lucie, on and off showers are set to occur with highs near 86°F and lows around 81°F. Rainfall predicted to have a 57% chance with an estimated 0.04in. Wind will be moderate, blowing around 14mph on average and gusts of 20.4mph at 3 PM. The humidity will be on the higher side, averaging about 72%, the maximum being 79% at 6 AM and 66% being its lowest at 11 AM. Barometric pressure is its highest of 30.12inHg at 11 AM, a lowest point of 30.02inHg at 4 AM with an avg 30.06inHg.
Port St. Lucie, FL Weather – 9-16 – Scattered Showers
85° / 81°
Scattered Showers
Highs will reach 85°F with lows near 81°F in Port St. Lucie, where passing showers are. Rainfall predicted to have a 69% chance with an estimated 0.15in. Wind will be moderate, blowing around 17mph on average and gusts of 20.6mph at 5 AM. The humidity will be on the higher side, averaging about 74%, the maximum being 82% at 11 PM and 64% being its lowest at 11 AM. Barometric pressure is its highest of 30.14inHg at 11 AM, a lowest point of 30.03inHg at 5 AM with an avg 30.09inHg.

Currently

Sunny 94°F
30.03 inHg.
Barometer
64%
Humidity
ESE 13.3 mph
Wind
Sunny

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