Weather in Port Saint Lucie, Florida for September 2026
Small Craft Advisory - See hour by hour.
Until now, September 2026 in Port Saint Lucie has been nearly identical to the historical average, with a temperature of 30.4 °F (showing only a slight deviation of 0.1 °F).
The forecast for the upcoming days in Port Saint Lucie predicts a temperature of 28.9 °F, which is slightly above the historical average.
In general, the average temperature in Port Saint Lucie at the beginning of September is 30.9 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 28.9 °F by the end of September.
Port Saint Lucie experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 401.3 mm.
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Port Saint Lucie Weather September
Temperatures trend during September in Port Saint Lucie
September weather in Port Saint Lucie day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain shower | 32° /24° | 235.8 mm | 7 | |
| Sept. 2 |  Overcast | 30° /24° | 26.9 mm | 6 | |
| Sept. 3 | Patchy rain possible | 30° /25° | 8 mm | 6 | |
| Sept. 4 | Light rain shower | 31° /25° | 20.4 mm | 8 | |
| Sept. 5 |  Partly cloudy | 30° /24° | 33.7 mm | 8 | |
| Sept. 6 | Overcast | 32° /23° | 26.4 mm | 8 | |
| Sept. 7 |  Thundery outbreaks possible | 31° /23° | 59.8 mm | 8 | |
| Sept. 8 | Patchy rain possible | 31° /23° | 3.1 mm | 7 | |
| Sept. 9 | Patchy rain possible | 31° /24° | 15.8 mm | 7 | |
| Sept. 10 |  Moderate or heavy rain shower | 31° /24° | 8.4 mm | 6 | |
| Sept. 11 |  Mist | 31° /24° | 16.6 mm | 7 | |
| Sept. 12 | Moderate or heavy rain shower | 30° /25° | 30.5 mm | 6 | |
| Sept. 13 | Moderate or heavy rain shower | 30° /24° | 21.3 mm | 6 | |
| Sept. 14 | Light rain shower | 31° /24° | 4.8 mm | 8 | |
| Sept. 15 | Partly cloudy | 31° /24° | 4.1 mm | 7 | |
| Sept. 16 | Moderate or heavy rain shower | 30° /25° | 10.9 mm | 6 | |
| Sept. 17 | Light rain shower | 31° /24° | 6.1 mm | 6 | |
| Sept. 18 |  Light rain | 31° /24° | 17.2 mm | 6 | |
| Sept. 19 | Light rain shower | 29° /24° | 7.9 mm | 7 | |
| Sept. 20 |  Patchy light rain with thunder | 30° /23° | 11.8 mm | 7 | |
| Sept. 21 | Moderate or heavy rain shower | 30° /23° | 19.5 mm | 6 | |
| Sept. 22 | Patchy rain possible | 30° /23° | 16.6 mm | 6 | |
| Sept. 23 |  Cloudy | 30° /24° | 2.1 mm | 5 | |
| Sept. 24 | Moderate or heavy rain shower | 30° /24° | 4.6 mm | 6 | |
| Sept. 25 | Patchy light rain with thunder | 30° /25° | 7.9 mm | 7 | |
| Sept. 26 |  Sunny | 28° /24° | 0.1 mm | 8.8 | |
| Sept. 27 | Sunny | 28° /23° | 0 mm | 9 | |
| Sept. 28 | Overcast | 28° /24° | 2 mm | 8.3 | |
| Sept. 29 | Overcast | 29° /23° | 0 mm | 8.2 | |
| Sept. 30 | Sunny | 29° /24° | 0.9 mm | 7 | |
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Port Saint Lucie in September - FAQ
What are the expected maximum and minimum temperatures in Port Saint Lucie during September?
How much rainfall should be expected in Port Saint Lucie during September?
What are the typical wind conditions in Port Saint Lucie during September?
September rainfall patterns in Port Saint Lucie
UV exposure in Port Saint Lucie during September
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Where is Port Saint Lucie?Get accurate weather forecasts for Port Saint Lucie, located at latitude 27.294 and longitude -80.35. Stay updated with localized weather information tailored for Port Saint Lucie.