Polk County (Lakeland)
September
Weather in Polk County, Florida for September 2026
Your guide to Polk County weather in September - trends and predictions
Special Weather Statement - See hour by hour.
So far, September 2026 in Polk County is slightly warmer than the historical average by 0.8 °F.
The forecast for the next days in Polk County predicts temperatures to be around 30 °F, close to the historical average.
In general, the average temperature in Polk County at the beginning of September is 31.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 29.9 °F by the end of September.
Polk County experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 321.9 mm.
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Official Weather Alert ⚠️
Temperatures
Rain 🌧️
More
6
Dry days
24
Rainy days
0
Snow days
31°/23°
Temperatures
15 km/h
Avg max wind
78 %
Avg humidity
Polk County Weather September
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Temperatures trend during September in Polk County
See the weather trend as well as the moving average line
September weather in Polk County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate or heavy rain shower | 30° /22° | 3.1 mm | 6 | |
| Sept. 2 | Moderate or heavy rain shower | 31° /23° | 127.5 mm | 7 | |
| Sept. 3 | Moderate or heavy rain shower | 31° /23° | 23.7 mm | 6 | |
| Sept. 4 | Moderate or heavy rain shower | 32° /24° | 10.4 mm | 8 | |
| Sept. 5 | Moderate or heavy rain shower | 33° /23° | 14.1 mm | 8 | |
| Sept. 6 | Moderate or heavy rain shower | 32° /24° | 11.1 mm | 8 | |
| Sept. 7 | Moderate or heavy rain shower | 31° /24° | 32.9 mm | 7 | |
| Sept. 8 | Moderate or heavy rain shower | 31° /23° | 84.8 mm | 5 | |
| Sept. 9 | Moderate or heavy rain shower | 30° /23° | 20.7 mm | 7 | |
| Sept. 10 | Moderate or heavy rain shower | 30° /24° | 22.1 mm | 5 | |
| Sept. 11 | Moderate or heavy rain shower | 30° /23° | 7.3 mm | 7 | |
| Sept. 12 |  Overcast | 31° /23° | 6.1 mm | 6 | |
| Sept. 13 |  Patchy rain possible | 31° /23° | 3.6 mm | 6 | |
| Sept. 14 |  Heavy rain at times | 32° /23° | 4.8 mm | 7 | |
| Sept. 15 | Patchy rain possible | 31° /23° | 3.2 mm | 8 | |
| Sept. 16 | Moderate or heavy rain shower | 31° /23° | 3.9 mm | 6 | |
| Sept. 17 | Heavy rain at times | 32° /23° | 9.6 mm | 8 | |
| Sept. 18 | Moderate or heavy rain shower | 31° /22° | 6.3 mm | 7 | |
| Sept. 19 | Patchy rain possible | 31° /22° | 2.5 mm | 8 | |
| Sept. 20 |  Sunny | 32° /23° | 1.2 mm | 7.5 | |
| Sept. 21 | Sunny | 32° /23° | 1.9 mm | 8.8 | |
| Sept. 22 | Sunny | 33° /24° | 2.7 mm | 9.2 | |
| Sept. 23 | Light rain shower | 32° /24° | 3.3 mm | 9.2 | |
| Sept. 24 | Overcast | 32° /24° | 0.6 mm | 8.7 | |
| Sept. 25 | Patchy rain possible | 30° /23° | 0.1 mm | 8 | |
| Sept. 26 | Overcast | 28° /23° | 0 mm | 6 | |
| Sept. 27 | Sunny | 30° /21° | 0 mm | 6 | |
| Sept. 28 | Overcast | 30° /21° | 0 mm | 7 | |
| Sept. 29 | Sunny | 30° /22° | 2.3 mm | 7 | |
| Sept. 30 | Patchy rain possible | 29° /22° | 5.8 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Polk 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 Polk County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Polk County in September - FAQ
What are the expected maximum and minimum temperatures in Polk County during September?
During September, expect a variety of temperatures with highs around 31° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in Polk County during September?
Significant rainfall exceeding 321.9 mm is expected in Polk County during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Polk County during September?
The average wind speed in Polk County during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Polk County
Explore the daily rainfall trends and prepare for Polk Countys September weather 💧
Typically, Polk County has 24 rainy days in September with a total of 321.9 mm of rainfall.
UV exposure in Polk County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Polk County?Get accurate weather forecasts for Polk County, located at latitude 28.039 and longitude -81.95. Stay updated with localized weather information tailored for Polk County.
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