Harrison County (Biloxi)
September
Weather in Harrison County for September 2025
Your guide to Harrison County weather in September - trends and predictions
In general, the average temperature in Harrison County at the beginning of September is 27.6 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 28.7 °F by the end of September.
Harrison County in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 299 mm.
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Temperatures
Rain 🌧️
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12
Dry days
18
Rainy days
0
Snow days
28°/23°
Temperatures
17 km/h
Avg max wind
82 %
Avg humidity
Harrison County Weather September
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  28° | 2  31° | 3  32° | 4  28° | 5 25° | 6 25° | |
| 7 24° | 8 29° | 9 27° | 10 24° | 11 25° | 12 26° | 13  29° |
| 14 28° | 15 28° | 16 28° | 17 28° | 18 28° | 19 28° | 20 29° |
| 21 30° | 22 30° | 23 28° | 24 28° | 25 29° | 26 27° | 27  28° |
| 28 30° | 29 30° | 30  29° |
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Temperatures trend during September in Harrison 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 | Patchy rain possible | 28° /23° | 1.6 mm | 6 | |
| Sept. 2 | Partly cloudy | 31° /23° | 0 mm | 8 | |
| Sept. 3 | Overcast | 32° /24° | 0 mm | 7 | |
| Sept. 4 | Moderate or heavy rain shower | 28° /24° | 27.2 mm | 6 | |
| Sept. 5 | Moderate or heavy rain shower | 25° /24° | 41.3 mm | 6 | |
| Sept. 6 | Moderate or heavy rain shower | 25° /23° | 47.6 mm | 6 | |
| Sept. 7 | Moderate or heavy rain shower | 24° /20° | 22.2 mm | 5 | |
| Sept. 8 | Overcast | 29° /20° | 0 mm | 6 | |
| Sept. 9 | Moderate or heavy rain shower | 27° /22° | 7 mm | 6 | |
| Sept. 10 | Moderate or heavy rain shower | 24° /23° | 29.5 mm | 5 | |
| Sept. 11 | Moderate or heavy rain shower | 25° /23° | 57.1 mm | 6 | |
| Sept. 12 | Overcast | 26° /23° | 20.1 mm | 6 | |
| Sept. 13 | Heavy rain at times | 29° /21° | 4.1 mm | 6 | |
| Sept. 14 | Patchy rain possible | 28° /22° | 1.3 mm | 6 | |
| Sept. 15 | Moderate or heavy rain shower | 28° /21° | 7.2 mm | 6 | |
| Sept. 16 | Moderate or heavy rain shower | 28° /23° | 2.6 mm | 6 | |
| Sept. 17 | Moderate or heavy rain shower | 28° /23° | 10.8 mm | 6 | |
| Sept. 18 | Heavy rain at times | 28° /24° | 3.6 mm | 6 | |
| Sept. 19 | Moderate or heavy rain shower | 28° /23° | 3.4 mm | 6 | |
| Sept. 20 | Patchy rain possible | 29° /24° | 11.9 mm | 6 | |
| Sept. 21 | Partly cloudy | 30° /23° | 0 mm | 8 | |
| Sept. 22 | Patchy rain possible | 30° /24° | 0.1 mm | 7 | |
| Sept. 23 | Patchy rain possible | 28° /23° | 0.1 mm | 6 | |
| Sept. 24 | Patchy rain possible | 28° /23° | 0.1 mm | 6 | |
| Sept. 25 | Patchy rain possible | 29° /24° | 0.3 mm | 6 | |
| Sept. 26 | Overcast | 27° /22° | 0 mm | 6 | |
| Sept. 27 | Sunny | 28° /20° | 0 mm | 7 | |
| Sept. 28 | Sunny | 30° /22° | 0 mm | 8 | |
| Sept. 29 | Sunny | 30° /22° | 0 mm | 8 | |
| Sept. 30 | Cloudy | 29° /24° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Harrison 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 Harrison County forecast closer to your planned date for the most up-to-date weather information.
Harrison County in September - FAQ
What are the expected maximum and minimum temperatures in Harrison County during September?
During September, expect a variety of temperatures with highs around 28° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in Harrison County during September?
Significant rainfall exceeding 299 mm is expected in Harrison County during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Harrison County during September?
The average wind speed in Harrison County during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Harrison County
Explore the daily rainfall trends and prepare for Harrison Countys September weather 💧
UV exposure in Harrison County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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