Weather in Duval County, Florida for September 2026
Coastal Flood Advisory - See hour by hour.
Until now, September 2026 in Duval County has been nearly identical to the historical average, with a temperature of 31 °F (showing only a slight deviation of 0.1 °F).
Expect cooler weather in the next days in Duval County with the forecast suggesting a temperature of 32.1 °F, lower than the historical average.
In general, the average temperature in Duval County at the beginning of September is 31.4 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 32.3 °F by the end of September.
Duval County in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 338.3 mm.
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Duval County Weather September
Temperatures trend during September in Duval County
September weather in Duval County day by day
| 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 | Moderate or heavy rain shower | 30° /23° | 22 mm | 6 | |
| Sept. 12 | Thundery outbreaks possible | 31° /23° | 2.1 mm | 7 | |
| Sept. 13 | Moderate or heavy rain shower | 31° /24° | 4.8 mm | 6 | |
| Sept. 14 | Light rain shower | 32° /24° | 3 mm | 6 | |
| Sept. 15 | Moderate or heavy rain shower | 30° /23° | 7.9 mm | 6 | |
| Sept. 16 | Moderate or heavy rain shower | 31° /23° | 5.7 mm | 6 | |
| Sept. 17 | Light rain shower | 31° /23° | 3.8 mm | 7 | |
| Sept. 18 |  Fog | 32° /23° | 1.7 mm | 7 | |
| Sept. 19 | Cloudy | 31° /23° | 1.6 mm | 7 | |
| Sept. 20 | Light rain shower | 30° /23° | 4.4 mm | 5 | |
| Sept. 21 | Moderate or heavy rain shower | 30° /22° | 6.4 mm | 6 | |
| Sept. 22 |  Light rain | 31° /22° | 2.5 mm | 7 | |
| Sept. 23 | Sunny | 31° /22° | 2.8 mm | 7 | |
| Sept. 24 | Partly cloudy | 32° /22° | 0 mm | 6 | |
| Sept. 25 |  Overcast | 31° /22° | 1.2 mm | 8 | |
| Sept. 26 | Sunny | 30° /18° | 0 mm | 7.9 | |
| Sept. 27 | Overcast | 32° /19° | 0 mm | 7.7 | |
| Sept. 28 | Sunny | 33° /22° | 0.1 mm | 7.8 | |
| Sept. 29 | Sunny | 34° /23° | 0 mm | 7.7 | |
| Sept. 30 | Sunny | 34° /24° | 0 mm | 8 | |
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Duval County in September - FAQ
What are the expected maximum and minimum temperatures in Duval County during September?
How much rainfall should be expected in Duval County during September?
What are the typical wind conditions in Duval County during September?
September rainfall patterns in Duval County
UV exposure in Duval County during September
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Where is Duval County?Get accurate weather forecasts for Duval County, located at latitude 30.332 and longitude -81.656. Stay updated with localized weather information tailored for Duval County.