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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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Average dry days
8
Dry days
Average rainy days
22
Rainy days
Average snowy days
0
Snow days
Average temperatures
30°/24°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Saint Lucie County in September average weather

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Temperatures trend during September in Saint Lucie County

See the weather trend as well as the moving average line

September weather day by day

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Date Weather Temperatures Rain UV More
Sept. 1 Light rain shower
Light rain shower
32° /25° 5.5 mm 7
Sept. 2 Overcast
Overcast
29° /24° 2.4 mm 6
Sept. 3 Patchy rain possible
Patchy rain possible
30° /25° 4.5 mm 7
Sept. 4 Cloudy
Cloudy
30° /25° 4.5 mm 7
Sept. 5 Partly cloudy
Partly cloudy
30° /25° 3.8 mm 8
Sept. 6 Overcast
Overcast
31° /24° 2.5 mm 7
Sept. 7 Thundery outbreaks possible
Thundery outbreaks possible
32° /23° 1.6 mm 7
Sept. 8 Thundery outbreaks possible
Thundery outbreaks possible
32° /24° 1 mm 7
Sept. 9 Patchy rain possible
Patchy rain possible
31° /24° 4.1 mm 7
Sept. 10 Patchy rain possible
Patchy rain possible
31° /24° 5.6 mm 7
Sept. 11 Mist
Mist
32° /25° 5 mm 7
Sept. 12 Mist
Mist
31° /25° 0.4 mm 7
Sept. 13 Cloudy
Cloudy
31° /25° 2.7 mm 7
Sept. 14 Light rain shower
Light rain shower
31° /25° 8.7 mm 7
Sept. 15 Partly cloudy
Partly cloudy
30° /25° 7.1 mm 7
Sept. 16 Moderate or heavy rain shower
Moderate or heavy rain shower
30° /25° 18.6 mm 7
Sept. 17 Light rain shower
Light rain shower
31° /24° 5.6 mm 7
Sept. 18 Light rain
Light rain
32° /23° 17.1 mm 7
Sept. 19 Moderate or heavy rain shower
Moderate or heavy rain shower
30° /25° 10.7 mm 7
Sept. 20 Patchy light rain with thunder
Patchy light rain with thunder
31° /22° 17.2 mm 7
Sept. 21 Moderate or heavy rain shower
Moderate or heavy rain shower
29° /24° 28.5 mm 7
Sept. 22 Patchy rain possible
Patchy rain possible
30° /23° 14.3 mm 7
Sept. 23 Cloudy
Cloudy
29° /24° 0 mm 6
Sept. 24 Moderate or heavy rain shower
Moderate or heavy rain shower
30° /24° 7.1 mm 7
Sept. 25 Patchy light rain with thunder
Patchy light rain with thunder
31° /25° 7 mm 7
Sept. 26 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
31° /23° 55.7 mm 7
Sept. 27 Moderate or heavy rain shower
Moderate or heavy rain shower
31° /25° 20.3 mm 7
Sept. 28 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
31° /24° 18.8 mm 7
Sept. 29 Moderate or heavy rain shower
Moderate or heavy rain shower
31° /24° 23.1 mm 7
Sept. 30 Moderate or heavy rain shower
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

Explore the daily rainfall trends and prepare for Saint Lucie Countys September weather 💧

UV exposure in Saint Lucie County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates 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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