Saint Johns County (Saint Augustine)
September
Weather in Saint Johns County, Florida for September 2025
Your guide to Saint Johns County weather in September - trends and predictions
In general, the average temperature in Saint Johns County at the beginning of September is 29.1 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 29.7 °F by the end of September.
Saint Johns County experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 291.3 mm.
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Temperatures
Rain 🌧️
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3
Dry days
27
Rainy days
0
Snow days
29°/24°
Temperatures
18 km/h
Avg max wind
80 %
Avg humidity
Saint Johns County Weather September
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Temperatures trend during September in Saint Johns County
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September weather in Saint Johns County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 29° /25° | 2.7 mm | 6 | |
| Sept. 2 |  Moderate or heavy rain shower | 30° /24° | 3.6 mm | 7 | |
| Sept. 3 | Patchy rain possible | 29° /24° | 8.1 mm | 6 | |
| Sept. 4 | Moderate or heavy rain shower | 29° /25° | 9.4 mm | 6 | |
| Sept. 5 | Moderate or heavy rain shower | 29° /24° | 23 mm | 6 | |
| Sept. 6 | Moderate or heavy rain shower | 30° /24° | 18 mm | 7 | |
| Sept. 7 | Patchy rain possible | 28° /23° | 1.5 mm | 6 | |
| Sept. 8 | Moderate or heavy rain shower | 27° /23° | 14.2 mm | 6 | |
| Sept. 9 | Moderate or heavy rain shower | 27° /24° | 14.4 mm | 6 | |
| Sept. 10 | Patchy rain possible | 27° /24° | 8.5 mm | 6 | |
| Sept. 11 | Moderate or heavy rain shower | 26° /24° | 32.4 mm | 6 | |
| Sept. 12 | Moderate or heavy rain shower | 27° /24° | 19.2 mm | 6 | |
| Sept. 13 |  Heavy rain at times | 29° /24° | 9.4 mm | 6 | |
| Sept. 14 | Moderate or heavy rain shower | 27° /24° | 5.9 mm | 6 | |
| Sept. 15 | Patchy rain possible | 27° /25° | 1.8 mm | 6 | |
| Sept. 16 | Patchy rain possible | 26° /24° | 1.5 mm | 6 | |
| Sept. 17 | Patchy rain possible | 28° /21° | 0.6 mm | 6 | |
| Sept. 18 | Moderate or heavy rain shower | 30° /22° | 26.2 mm | 7 | |
| Sept. 19 | Patchy rain possible | 28° /23° | 19.9 mm | 6 | |
| Sept. 20 | Patchy rain possible | 28° /23° | 0.2 mm | 6 | |
| Sept. 21 | Patchy rain possible | 28° /24° | 0.5 mm | 6 | |
| Sept. 22 | Patchy rain possible | 30° /23° | 0.3 mm | 7 | |
| Sept. 23 |  Partly cloudy | 30° /22° | 0 mm | 8 | |
| Sept. 24 | Patchy rain possible | 31° /23° | 0.1 mm | 7 | |
| Sept. 25 | Patchy rain possible | 29° /26° | 0.8 mm | 6 | |
| Sept. 26 | Moderate or heavy rain shower | 28° /25° | 37 mm | 6 | |
| Sept. 27 | Patchy rain possible | 31° /26° | 1.6 mm | 7 | |
| Sept. 28 | Patchy rain possible | 31° /24° | 1 mm | 7 | |
| Sept. 29 | Patchy rain possible | 29° /24° | 1.4 mm | 6 | |
| Sept. 30 | Light rain shower | 29° /26° | 28 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Saint Johns 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 Johns County forecast closer to your planned date for the most up-to-date weather information.
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Saint Johns County in September - FAQ
What are the expected maximum and minimum temperatures in Saint Johns County during September?
During September, expect a variety of temperatures with highs around 29° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Saint Johns County during September?
Significant rainfall exceeding 291.3 mm is expected in Saint Johns County during September, occurring over more than 27 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saint Johns County during September?
The average wind speed in Saint Johns County during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Saint Johns County
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UV exposure in Saint Johns County during September
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Where is Saint Johns County?Get accurate weather forecasts for Saint Johns County, located at latitude 29.895 and longitude -81.315. Stay updated with localized weather information tailored for Saint Johns County.
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