Newark (NJ)
September
Weather in Newark, New Jersey for September 2026
Your guide to Newark weather in September - trends and predictions
So far, September 2026 in Newark is slightly warmer than the historical average by 1.3 °F.
Expect cooler weather in the next days in Newark with the forecast suggesting a temperature of 23.6 °F, lower than the historical average.
In general, the average temperature in Newark at the beginning of September is 28.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23.1 °F by the end of September.
Newark experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 220 mm.
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Temperatures
Rain 🌧️
More
9
Dry days
21
Rainy days
0
Snow days
24°/17°
Temperatures
16 km/h
Avg max wind
69 %
Avg humidity
Newark Weather September
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Temperatures trend during September in Newark
See the weather trend as well as the moving average line
September weather in Newark day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 28° /18° | 51.1 mm | 5 | |
| Sept. 2 |  Partly cloudy | 27° /17° | 0.5 mm | 5 | |
| Sept. 3 | Partly cloudy | 28° /17° | 0.9 mm | 5 | |
| Sept. 4 | Sunny | 29° /19° | 0 mm | 7 | |
| Sept. 5 | Sunny | 29° /19° | 11.6 mm | 7 | |
| Sept. 6 | Partly cloudy | 30° /20° | 14.5 mm | 7 | |
| Sept. 7 |  Thundery outbreaks possible | 26° /17° | 24.1 mm | 6 | |
| Sept. 8 | Sunny | 27° /15° | 1.4 mm | 7 | |
| Sept. 9 | Partly cloudy | 27° /16° | 1.8 mm | 5 | |
| Sept. 10 |  Light rain shower | 26° /18° | 1.8 mm | 5 | |
| Sept. 11 | Light rain shower | 28° /18° | 1.4 mm | 6 | |
| Sept. 12 |  Cloudy | 27° /17° | 0 mm | 7 | |
| Sept. 13 |  Moderate or heavy rain shower | 26° /18° | 23.5 mm | 5 | |
| Sept. 14 |  Overcast | 26° /17° | 0 mm | 6 | |
| Sept. 15 | Sunny | 23° /14° | 0 mm | 6.5 | |
| Sept. 16 | Overcast | 27° /16° | 0 mm | 6.6 | |
| Sept. 17 | Overcast | 29° /19° | 0 mm | 7 | |
| Sept. 18 | Overcast | 29° /20° | 0 mm | 7 | |
| Sept. 19 | Overcast | 20° /16° | 0.2 mm | 4 | |
| Sept. 20 | Light rain shower | 22° /17° | 8.2 mm | 5 | |
| Sept. 21 | Patchy rain possible | 18° /15° | 2.4 mm | 4 | |
| Sept. 22 | Patchy rain possible | 19° /16° | 12.1 mm | 4 | |
| Sept. 23 | Light rain shower | 23° /16° | 11.4 mm | 5 | |
| Sept. 24 | Overcast | 26° /16° | 4 mm | 6 | |
| Sept. 25 | Sunny | 19° /13° | 0 mm | 5 | |
| Sept. 26 | Sunny | 22° /12° | 0 mm | 6 | |
| Sept. 27 | Sunny | 26° /14° | 0 mm | 7 | |
| Sept. 28 | Sunny | 28° /17° | 0 mm | 7 | |
| Sept. 29 |  Mist | 20° /15° | 17.2 mm | 5 | |
| Sept. 30 |  Light rain | 21° /15° | 6.1 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Newark 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 Newark forecast closer to your planned date for the most up-to-date weather information.
Change Month
Newark in September - FAQ
What are the expected maximum and minimum temperatures in Newark during September?
During September, expect a variety of temperatures with highs around 24° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Newark during September?
Significant rainfall exceeding 220 mm is expected in Newark during September, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Newark during September?
The average wind speed in Newark during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Newark
Explore the daily rainfall trends and prepare for Newarks September weather 💧
Typically, Newark has 21 rainy days in September with a total of 220 mm of rainfall.
UV exposure in Newark during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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