Jacksonville (FL)
September
Weather in Jacksonville, Florida for September 2026
Your guide to Jacksonville weather in September - trends and predictions
Until now, September 2026 in Jacksonville has been nearly identical to the historical average, with a temperature of 31.2 °F (showing only a slight deviation of 0.1 °F).
The forecast for the upcoming days in Jacksonville predicts a temperature of 33.1 °F, which is slightly above the historical average.
In general, the average temperature in Jacksonville at the beginning of September is 31.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 30 °F by the end of September.
Jacksonville in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 338.3 mm.
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Temperatures
Rain 🌧️
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14
Dry days
16
Rainy days
0
Snow days
30°/23°
Temperatures
16 km/h
Avg max wind
74 %
Avg humidity
Jacksonville Weather September
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Temperatures trend during September in Jacksonville
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September weather in Jacksonville day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate or heavy rain shower | 30° /25° | 20 mm | 8 | |
| Sept. 2 |  Cloudy | 31° /24° | 16.4 mm | 7 | |
| Sept. 3 | Cloudy | 30° /24° | 13.9 mm | 6 | |
| Sept. 4 |  Partly cloudy | 31° /24° | 63.8 mm | 7 | |
| Sept. 5 |  Sunny | 33° /23° | 4.7 mm | 8 | |
| Sept. 6 | Partly cloudy | 34° /23° | 21.3 mm | 9 | |
| Sept. 7 | Cloudy | 31° /23° | 107.6 mm | 6 | |
| Sept. 8 |  Thundery outbreaks possible | 31° /23° | 57.3 mm | 6 | |
| Sept. 9 | Thundery outbreaks possible | 29° /23° | 23.5 mm | 7 | |
| Sept. 10 |  Light rain shower | 30° /23° | 12.6 mm | 7 | |
| Sept. 11 | Patchy rain possible | 36° /25° | 22.5 mm | 9 | |
| Sept. 12 |  Overcast | 37° /25° | 2.1 mm | 8.8 | |
| Sept. 13 | Patchy rain possible | 37° /25° | 10.4 mm | 8.9 | |
| Sept. 14 | Sunny | 37° /25° | 1.2 mm | 9 | |
| Sept. 15 | Sunny | 34° /26° | 0.2 mm | 8 | |
| Sept. 16 | Sunny | 33° /27° | 0.7 mm | 8 | |
| Sept. 17 | Sunny | 33° /25° | 0 mm | 8 | |
| Sept. 18 | Sunny | 33° /25° | 0 mm | 8 | |
| Sept. 19 | Partly cloudy | 31° /25° | 0.6 mm | 8 | |
| Sept. 20 | Sunny | 32° /26° | 1.5 mm | 8 | |
| Sept. 21 | Overcast | 32° /25° | 2.2 mm | 7 | |
| Sept. 22 | Moderate or heavy rain shower | 26° /23° | 77.1 mm | 6 | |
| Sept. 23 | Patchy rain possible | 31° /22° | 0.9 mm | 8 | |
| Sept. 24 | Sunny | 32° /21° | 0 mm | 8 | |
| Sept. 25 | Overcast | 32° /24° | 1.6 mm | 7 | |
| Sept. 26 |  Torrential rain shower | 30° /24° | 36.3 mm | 6 | |
| Sept. 27 | Moderate or heavy rain shower | 29° /25° | 15.9 mm | 6 | |
| Sept. 28 | Torrential rain shower | 29° /23° | 45.1 mm | 6 | |
| Sept. 29 | Moderate or heavy rain shower | 29° /24° | 20.6 mm | 6 | |
| Sept. 30 |  Mist | 29° /23° | 7.1 mm | 6 | |
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Important Notice
Our weather forecast for Jacksonville 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 Jacksonville forecast closer to your planned date for the most up-to-date weather information.
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Jacksonville in September - FAQ
What are the expected maximum and minimum temperatures in Jacksonville during September?
During September, expect a variety of temperatures with highs around 30° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in Jacksonville during September?
Significant rainfall exceeding 338.3 mm is expected in Jacksonville during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Jacksonville during September?
The average wind speed in Jacksonville during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Jacksonville
Explore the daily rainfall trends and prepare for Jacksonvilles September weather 💧
Typically, Jacksonville has 16 rainy days in September with a total of 338.3 mm of rainfall.
UV exposure in Jacksonville during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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