Saint Lucie County (Port Saint Lucie)
September
Weather in Saint Lucie County for September 2025
Your guide to Saint Lucie County weather in September - trends and predictions
In general, the average temperature in Saint Lucie County at the beginning of September is 30.6 °F. As the month progressed, temperatures tended to slightly increase, reaching an average of 31 °F by the end of September.
Saint Lucie County experiences an exceptionally high level of rainfall in September, with more than 20 rainy days on average.
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8
Dry days
22
Rainy days
0
Snow days
30°/24°
Temperatures
19 km/h
Avg max wind
76 %
Avg humidity
Saint Lucie County in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  32° | 2  29° | 3 30° | 4  30° | 5  30° | 6 31° | 7  32° |
| 8 32° | 9 31° | 10 31° | 11  32° | 12 31° | 13 31° | 14 31° |
| 15 30° | 16  30° | 17 31° | 18  32° | 19 30° | 20  31° | 21 29° |
| 22 30° | 23 29° | 24 30° | 25 31° | 26  31° | 27 31° | 28 31° |
| 29 31° | 30 32° |
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Temperatures trend during September in Saint Lucie County
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September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Light rain shower | 32° /25° | 5.5 mm | 7 | |
| Sept. 2 | Overcast | 29° /24° | 2.4 mm | 6 | |
| Sept. 3 | Patchy rain possible | 30° /25° | 4.5 mm | 7 | |
| Sept. 4 | Cloudy | 30° /25° | 4.5 mm | 7 | |
| Sept. 5 | Partly cloudy | 30° /25° | 3.8 mm | 8 | |
| Sept. 6 | Overcast | 31° /24° | 2.5 mm | 7 | |
| Sept. 7 | Thundery outbreaks possible | 32° /23° | 1.6 mm | 7 | |
| Sept. 8 | Thundery outbreaks possible | 32° /24° | 1 mm | 7 | |
| Sept. 9 | Patchy rain possible | 31° /24° | 4.1 mm | 7 | |
| Sept. 10 | Patchy rain possible | 31° /24° | 5.6 mm | 7 | |
| Sept. 11 | Mist | 32° /25° | 5 mm | 7 | |
| Sept. 12 | Mist | 31° /25° | 0.4 mm | 7 | |
| Sept. 13 | Cloudy | 31° /25° | 2.7 mm | 7 | |
| Sept. 14 | Light rain shower | 31° /25° | 8.7 mm | 7 | |
| Sept. 15 | Partly cloudy | 30° /25° | 7.1 mm | 7 | |
| Sept. 16 | Moderate or heavy rain shower | 30° /25° | 18.6 mm | 7 | |
| Sept. 17 | Light rain shower | 31° /24° | 5.6 mm | 7 | |
| Sept. 18 | Light rain | 32° /23° | 17.1 mm | 7 | |
| Sept. 19 | Moderate or heavy rain shower | 30° /25° | 10.7 mm | 7 | |
| Sept. 20 | Patchy light rain with thunder | 31° /22° | 17.2 mm | 7 | |
| Sept. 21 | Moderate or heavy rain shower | 29° /24° | 28.5 mm | 7 | |
| Sept. 22 | Patchy rain possible | 30° /23° | 14.3 mm | 7 | |
| Sept. 23 | Cloudy | 29° /24° | 0 mm | 6 | |
| Sept. 24 | Moderate or heavy rain shower | 30° /24° | 7.1 mm | 7 | |
| Sept. 25 | Patchy light rain with thunder | 31° /25° | 7 mm | 7 | |
| Sept. 26 | Moderate or heavy rain with thunder | 31° /23° | 55.7 mm | 7 | |
| Sept. 27 | Moderate or heavy rain shower | 31° /25° | 20.3 mm | 7 | |
| Sept. 28 | Moderate or heavy rain with thunder | 31° /24° | 18.8 mm | 7 | |
| Sept. 29 | Moderate or heavy rain shower | 31° /24° | 23.1 mm | 7 | |
| Sept. 30 | Moderate or heavy rain shower | 32° /25° | 6 mm | 7 | |
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Important Notice
Our weather forecast for Saint Lucie County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Saint Lucie County forecast closer to your planned date for the most up-to-date weather information.
Saint Lucie County in September - FAQ
What are the expected maximum and minimum temperatures in Saint Lucie County during September?
During September, expect a variety of temperatures with highs around 30° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Saint Lucie County during September?
Significant rainfall exceeding 381.4 mm is expected in Saint Lucie County during September, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saint Lucie County during September?
The average wind speed in Saint Lucie County during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Saint Lucie County
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UV exposure in Saint Lucie County during September
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Where is Saint Lucie County?Get accurate weather forecasts for Saint Lucie County, located at latitude 27.294 and longitude -80.35. Stay updated with localized weather information tailored for Saint Lucie County.
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