Sussex County (Newton)
September
Weather in Sussex County, New Jersey 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 23.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.6 °C by the end of September.
Sussex County experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 161.5 mm.
Is September a good time to visit Sussex County? check out the best time to travel to Sussex County page.
✨ Is September a good time to visit Sussex County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
22°/14°
Temperatures
13 km/h
Avg max wind
75 %
Avg humidity
Sussex County Weather September
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Temperatures trend during September in Sussex County
See the weather trend as well as the moving average line
September weather in Sussex County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain | 26° /17° | 2.9 mm | 4 | |
| Sept. 2 |  Patchy rain possible | 23° /15° | 1.3 mm | 5 | |
| Sept. 3 | Light rain | 24° /13° | 2.8 mm | 4 | |
| Sept. 4 |  Sunny | 25° /15° | 0 mm | 6 | |
| Sept. 5 |  Moderate rain | 25° /15° | 13.3 mm | 7 | |
| Sept. 6 | Patchy rain possible | 24° /15° | 1.6 mm | 6 | |
| Sept. 7 | Moderate rain | 20° /11° | 21.4 mm | 5 | |
| Sept. 8 | Sunny | 22° /9° | 0 mm | 6 | |
| Sept. 9 |  Overcast | 23° /12° | 0 mm | 4 | |
| Sept. 10 | Overcast | 24° /15° | 0.3 mm | 4 | |
| Sept. 11 |  Partly cloudy | 25° /13° | 0 mm | 6 | |
| Sept. 12 | Sunny | 25° /13° | 0 mm | 6 | |
| Sept. 13 | Light rain | 24° /15° | 5.3 mm | 5 | |
| Sept. 14 | Partly cloudy | 25° /13° | 0 mm | 6.9 | |
| Sept. 15 | Partly cloudy | 23° /13° | 0 mm | 6 | |
| Sept. 16 |  Cloudy | 23° /13° | 0 mm | 6 | |
| Sept. 17 | Overcast | 22° /15° | 0.4 mm | 5 | |
| Sept. 18 |  Fog | 23° /16° | 0 mm | 5 | |
| Sept. 19 | Overcast | 22° /15° | 0 mm | 5 | |
| Sept. 20 | Light rain | 19° /14° | 4.4 mm | 4 | |
| Sept. 21 | Cloudy | 20° /14° | 0 mm | 3 | |
| Sept. 22 | Patchy rain possible | 20° /12° | 2.4 mm | 4 | |
| Sept. 23 | Overcast | 19° /12° | 0 mm | 4 | |
| Sept. 24 | Light rain | 20° /12° | 7.9 mm | 5 | |
| Sept. 25 |  Heavy rain at times | 19° /13° | 38.3 mm | 3 | |
| Sept. 26 | Moderate rain | 20° /15° | 16.9 mm | 4 | |
| Sept. 27 | Moderate rain | 19° /14° | 12.2 mm | 4 | |
| Sept. 28 |  Heavy rain | 19° /15° | 30.1 mm | 3 | |
| Sept. 29 | Mist | 20° /14° | 0 mm | 4 | |
| Sept. 30 | Overcast | 21° /13° | 0 mm | 4 | |
| Next | |||||
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.
Change Month
Sussex County in September - FAQ
What are the expected maximum and minimum temperatures in Sussex County during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Sussex County during September?
Significant rainfall exceeding 161.5 mm is expected in Sussex County during September, occurring over more than 7 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 13 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 7 rainy days in September with a total of 161.5 mm of rainfall.
UV exposure in Sussex County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Sussex County
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