Clayton (NJ)
September
Weather in Clayton, New Jersey for September 2026
Your guide to Clayton weather in September - trends and predictions
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So far, September 2026 in Clayton is slightly warmer than the historical average by 1.2 °F.
The forecast for the upcoming days in Clayton predicts a temperature of 19.1 °F, which is slightly above the historical average.
In general, the average temperature in Clayton at the beginning of September is 27.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.1 °F by the end of September.
The climate of Clayton in September is notably wet, with an average of 11 rainy days, and a total of 158.1 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
11
Rainy days
0
Snow days
25°/17°
Temperatures
16 km/h
Avg max wind
72 %
Avg humidity
Clayton Weather September
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Temperatures trend during September in Clayton
See the weather trend as well as the moving average line
September weather in Clayton day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 29° /20° | 2.4 mm | 6 | |
| Sept. 2 |  Cloudy | 26° /19° | 0.3 mm | 5 | |
| Sept. 3 |  Sunny | 27° /17° | 3.5 mm | 4 | |
| Sept. 4 |  Overcast | 28° /17° | 0.3 mm | 7 | |
| Sept. 5 | Sunny | 29° /17° | 14.5 mm | 6 | |
| Sept. 6 | Patchy rain possible | 28° /18° | 7.2 mm | 7 | |
| Sept. 7 |  Moderate rain at times | 23° /15° | 8.6 mm | 6 | |
| Sept. 8 | Sunny | 25° /13° | 0 mm | 7 | |
| Sept. 9 | Sunny | 26° /15° | 0 mm | 6 | |
| Sept. 10 | Overcast | 26° /17° | 0 mm | 5 | |
| Sept. 11 | Sunny | 27° /17° | 0.6 mm | 5 | |
| Sept. 12 | Sunny | 27° /16° | 0 mm | 6 | |
| Sept. 13 | Cloudy | 27° /18° | 3.5 mm | 5 | |
| Sept. 14 | Sunny | 28° /16° | 0.2 mm | 7 | |
| Sept. 15 | Patchy rain possible | 27° /16° | 0.1 mm | 7 | |
| Sept. 16 | Overcast | 26° /15° | 0 mm | 6 | |
| Sept. 17 | Patchy rain possible | 25° /17° | 11.2 mm | 5 | |
| Sept. 18 | Patchy rain possible | 26° /19° | 1.4 mm | 5 | |
| Sept. 19 |  Heavy rain at times | 27° /17° | 5.2 mm | 5 | |
| Sept. 20 | Patchy rain possible | 23° /17° | 4.9 mm | 4 | |
| Sept. 21 | Overcast | 21° /14° | 17.7 mm | 6.2 | |
| Sept. 22 | Light rain shower | 15° /13° | 12.9 mm | 0.5 | |
| Sept. 23 | Light rain shower | 16° /12° | 13 mm | 1.8 | |
| Sept. 24 | Overcast | 16° /11° | 4.9 mm | 3.8 | |
| Sept. 25 | Overcast | 20° /11° | 1.4 mm | 5 | |
| Sept. 26 | Light rain shower | 12° /11° | 4.4 mm | 3 | |
| Sept. 27 | Overcast | 16° /12° | 0.6 mm | 4 | |
| Sept. 28 | Overcast | 18° /14° | 5.5 mm | 4 | |
| Sept. 29 | Light rain shower | 23° /17° | 11.1 mm | 5 | |
| Sept. 30 | Patchy rain possible | 22° /17° | 2.6 mm | 5 | |
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Important Notice
Our weather forecast for Clayton 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 Clayton forecast closer to your planned date for the most up-to-date weather information.
Change Month
Clayton in September - FAQ
What are the expected maximum and minimum temperatures in Clayton during September?
During September, expect a variety of temperatures with highs around 25° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Clayton during September?
Significant rainfall exceeding 158.1 mm is expected in Clayton during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Clayton during September?
The average wind speed in Clayton during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Clayton
Explore the daily rainfall trends and prepare for Claytons September weather 💧
Typically, Clayton has 11 rainy days in September with a total of 158.1 mm of rainfall.
UV exposure in Clayton during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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