Weather in Essex County, New Jersey for September 2025
Rip Current Statement - See hour by hour.
Until now, September 2025 in Essex County is cooler than usual, with temperatures averaging 24.2 °F, this is -2.8 °F below the typical seasonal average.
Expect cooler weather in the next days in Essex County with the forecast suggesting a temperature of 25.9 °F, lower than the historical average.
In general, the average temperature in Essex County at the beginning of September is 27.7 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 24.9 °F by the end of September.
Essex County in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 178.9 mm.
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Essex County Weather September
Temperatures trend during September in Essex County
September weather in Essex County day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 26° /18° | 1.2 mm | 6 | |
| Sept. 2 |  Partly cloudy | 28° /17° | 0 mm | 7 | |
| Sept. 3 | Partly cloudy | 27° /16° | 0 mm | 6 | |
| Sept. 4 | Partly cloudy | 28° /18° | 0 mm | 7 | |
| Sept. 5 | Partly cloudy | 30° /20° | 15.5 mm | 7 | |
| Sept. 6 | Partly cloudy | 30° /21° | 19.3 mm | 7 | |
| Sept. 7 |  Thundery outbreaks possible | 25° /18° | 32.2 mm | 6 | |
| Sept. 8 |  Light rain shower | 26° /15° | 1.8 mm | 6 | |
| Sept. 9 | Partly cloudy | 26° /16° | 2.4 mm | 6 | |
| Sept. 10 | Light rain shower | 25° /17° | 2 mm | 6 | |
| Sept. 11 | Light rain shower | 28° /17° | 1.9 mm | 7 | |
| Sept. 12 |  Cloudy | 27° /18° | 0 mm | 7 | |
| Sept. 13 |  Moderate or heavy rain shower | 25° /17° | 9.4 mm | 6 | |
| Sept. 14 |  Overcast | 27° /17° | 0 mm | 6 | |
| Sept. 15 | Partly cloudy | 27° /18° | 0 mm | 1.4 | |
| Sept. 16 | Overcast | 27° /17° | 0 mm | 1.3 | |
| Sept. 17 |  Mist | 22° /15° | 0 mm | 0.5 | |
| Sept. 18 | Partly cloudy | 29° /18° | 0 mm | 1.4 | |
| Sept. 19 | Sunny | 30° /20° | 0 mm | 0 | |
| Sept. 20 | Sunny | 21° /14° | 0 mm | 5 | |
| Sept. 21 | Sunny | 21° /14° | 0 mm | 5 | |
| Sept. 22 | Sunny | 23° /14° | 0 mm | 5 | |
| Sept. 23 | Sunny | 25° /15° | 0 mm | 5 | |
| Sept. 24 | Patchy rain possible | 30° /19° | 0.4 mm | 5 | |
| Sept. 25 | Partly cloudy | 27° /19° | 0 mm | 6 | |
| Sept. 26 | Overcast | 25° /19° | 0 mm | 5 | |
| Sept. 27 | Sunny | 29° /18° | 0 mm | 6 | |
| Sept. 28 | Sunny | 27° /20° | 0 mm | 6 | |
| Sept. 29 |  Moderate or heavy rain with thunder | 17° /15° | 25.8 mm | 4 | |
| Sept. 30 |  Light rain | 19° /14° | 9.2 mm | 4 | |
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Essex County in September - FAQ
September rainfall patterns in Essex County
UV exposure in Essex County during September
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Where is Essex County?Get accurate weather forecasts for Essex County, located at latitude 40.736 and longitude -74.172. Stay updated with localized weather information tailored for Essex County.