Wilmington
September
Weather in Wilmington for September 2025
Your guide to Wilmington weather in September - trends and predictions
In general, the average temperature in Wilmington at the beginning of September is 27.7 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 28.4 °F by the end of September.
The climate of Wilmington in September is notably wet, with an average of 13 rainy days, and a total of 266.7 mm of precipitation.
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Temperatures
Rain 🌧️
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17
Dry days
13
Rainy days
0
Snow days
27°/21°
Temperatures
18 km/h
Avg max wind
79 %
Avg humidity
Wilmington Weather September
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  32° | 2  29° | 3  28° | 4 26° | 5 29° | 6 27° | |
| 7 23° | 8 23° | 9 25° | 10  27° | 11  26° | 12 26° | 13 23° |
| 14 26° | 15 27° | 16 24° | 17 26° | 18  29° | 19 26° | 20 28° |
| 21 29° | 22 29° | 23  27° | 24 28° | 25 29° | 26 27° | 27 27° |
| 28 30° | 29  29° | 30 29° |
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Temperatures trend during September in Wilmington
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 | 32° /23° | 2.8 mm | 7 | |
| Sept. 2 | Moderate or heavy rain shower | 29° /23° | 26.1 mm | 6 | |
| Sept. 3 | Partly cloudy | 28° /20° | 2 mm | 7 | |
| Sept. 4 | Light rain shower | 26° /22° | 5.6 mm | 6 | |
| Sept. 5 | Patchy rain possible | 29° /20° | 0.2 mm | 6 | |
| Sept. 6 | Patchy rain possible | 27° /20° | 0.3 mm | 6 | |
| Sept. 7 | Light rain shower | 23° /20° | 21.6 mm | 5 | |
| Sept. 8 | Patchy rain possible | 23° /19° | 0.3 mm | 5 | |
| Sept. 9 | Patchy rain possible | 25° /19° | 0.1 mm | 6 | |
| Sept. 10 | Sunny | 27° /18° | 0 mm | 7 | |
| Sept. 11 | Overcast | 26° /20° | 0 mm | 6 | |
| Sept. 12 | Patchy rain possible | 26° /21° | 0.4 mm | 6 | |
| Sept. 13 | Moderate or heavy rain shower | 23° /22° | 45.8 mm | 5 | |
| Sept. 14 | Light rain shower | 26° /21° | 2.5 mm | 6 | |
| Sept. 15 | Patchy rain possible | 27° /21° | 2 mm | 6 | |
| Sept. 16 | Moderate or heavy rain shower | 24° /19° | 77 mm | 5 | |
| Sept. 17 | Overcast | 26° /21° | 0 mm | 6 | |
| Sept. 18 | Fog | 29° /20° | 0 mm | 6 | |
| Sept. 19 | Mist | 26° /22° | 0 mm | 6 | |
| Sept. 20 | Mist | 28° /20° | 0 mm | 6 | |
| Sept. 21 | Partly cloudy | 29° /21° | 0 mm | 7 | |
| Sept. 22 | Moderate rain at times | 29° /22° | 7.5 mm | 6 | |
| Sept. 23 | Cloudy | 27° /19° | 0 mm | 6 | |
| Sept. 24 | Cloudy | 28° /23° | 0 mm | 6 | |
| Sept. 25 | Cloudy | 29° /24° | 0 mm | 6 | |
| Sept. 26 | Overcast | 27° /25° | 0 mm | 6 | |
| Sept. 27 | Moderate or heavy rain shower | 27° /25° | 35.2 mm | 6 | |
| Sept. 28 | Sunny | 30° /24° | 3.3 mm | 8 | |
| Sept. 29 | Torrential rain shower | 29° /22° | 33.9 mm | 6 | |
| Sept. 30 | Fog | 29° /22° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Wilmington 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 Wilmington forecast closer to your planned date for the most up-to-date weather information.
Wilmington in September - FAQ
What are the expected maximum and minimum temperatures in Wilmington during September?
During September, expect a variety of temperatures with highs around 27° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Wilmington during September?
Significant rainfall exceeding 266.7 mm is expected in Wilmington during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Wilmington during September?
The average wind speed in Wilmington during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Wilmington
Explore the daily rainfall trends and prepare for Wilmingtons September weather 💧
UV exposure in Wilmington during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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