Sussex County (Lewes)
September
Weather in Sussex County, Delaware for September 2027
Your guide to Sussex County weather in September - trends and predictions
In general, the average temperature in Sussex County at the beginning of September is 29 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.4 °F by the end of September.
Sussex County in September brings notable rainfall, with an average of 20 rainy days and a total precipitation of 156.4 mm.
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Temperatures
Rain 🌧️
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10
Dry days
20
Rainy days
0
Snow days
25°/18°
Temperatures
22 km/h
Avg max wind
76 %
Avg humidity
Sussex County Weather September
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Temperatures trend during September in Sussex County
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September weather in Sussex County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 35° /20° | 0.6 mm | 9 | |
| Sept. 2 |  Moderate rain at times | 25° /23° | 1.5 mm | 2 | |
| Sept. 3 | Moderate or heavy rain shower | 32° /22° | 11.4 mm | 2 | |
| Sept. 4 |  Overcast | 31° /22° | 13.8 mm | 8 | |
| Sept. 5 | Overcast | 26° /21° | 7.4 mm | 5 | |
| Sept. 6 | Patchy rain possible | 27° /19° | 2.3 mm | 8 | |
| Sept. 7 |  Heavy rain at times | 27° /17° | 4.3 mm | 7 | |
| Sept. 8 | Overcast | 28° /15° | 0 mm | 8 | |
| Sept. 9 | Overcast | 29° /18° | 0 mm | 4 | |
| Sept. 10 | Patchy rain possible | 31° /21° | 0.1 mm | 7 | |
| Sept. 11 | Moderate or heavy rain shower | 26° /21° | 14.3 mm | 2 | |
| Sept. 12 | Overcast | 27° /20° | 0 mm | 6 | |
| Sept. 13 | Moderate or heavy rain shower | 28° /21° | 14.8 mm | 2 | |
| Sept. 14 | Moderate rain at times | 25° /20° | 1.7 mm | 7 | |
| Sept. 15 | Overcast | 23° /16° | 0 mm | 7 | |
| Sept. 16 | Overcast | 27° /15° | 0 mm | 7 | |
| Sept. 17 | Overcast | 31° /18° | 0 mm | 6 | |
| Sept. 18 | Patchy rain possible | 28° /21° | 1.4 mm | 4 | |
| Sept. 19 | Patchy rain possible | 24° /19° | 2.1 mm | 3 | |
| Sept. 20 | Moderate or heavy rain shower | 28° /20° | 4.5 mm | 2 | |
| Sept. 21 | Patchy rain possible | 21° /20° | 7.2 mm | 1 | |
| Sept. 22 | Moderate or heavy rain shower | 20° /18° | 11.1 mm | 1 | |
| Sept. 23 | Heavy rain at times | 19° /16° | 10.3 mm | 1 | |
| Sept. 24 | Overcast | 19° /16° | 0 mm | 1 | |
| Sept. 25 | Overcast | 20° /14° | 0.2 mm | 1 | |
| Sept. 26 | Moderate or heavy rain shower | 18° /13° | 15.6 mm | 1 | |
| Sept. 27 | Moderate or heavy rain shower | 16° /13° | 29.5 mm | 1 | |
| Sept. 28 | Patchy rain possible | 18° /15° | 1.6 mm | 1 | |
| Sept. 29 | Patchy rain possible | 22° /17° | 0.7 mm | 1 | |
| Sept. 30 | Overcast | 23° /17° | 0 mm | 3 | |
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Important Notice
Our weather forecast for Sussex 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 Sussex County forecast closer to your planned date for the most up-to-date weather information.
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Sussex County in September - FAQ
What are the expected maximum and minimum temperatures in Sussex County during September?
During September, expect a variety of temperatures with highs around 25° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Sussex County during September?
Significant rainfall exceeding 156.4 mm is expected in Sussex County during September, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Sussex County during September?
The average wind speed in Sussex County during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Sussex County
Explore the daily rainfall trends and prepare for Sussex Countys September weather 💧
Typically, Sussex County has 20 rainy days in September with a total of 156.4 mm of rainfall.
UV exposure in Sussex County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Sussex County?Get accurate weather forecasts for Sussex County, located at latitude 38.775 and longitude -75.139. Stay updated with localized weather information tailored for Sussex County.
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