Weather in Parsippany, New Jersey for September 2025
Rip Current Statement - See hour by hour.
Until now, September 2025 in Parsippany has been nearly identical to the historical average, with a temperature of 24.6 °F (showing only a slight deviation of -0.1 °F).
The forecast for the next days in Parsippany predicts temperatures to be around 26 °F, close to the historical average.
In general, the average temperature in Parsippany at the beginning of September is 24.6 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 26.1 °F by the end of September.
Parsippany experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 115.2 mm.
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Parsippany Weather September
Temperatures trend during September in Parsippany
September weather in Parsippany day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain shower | 25° /18° | 1.6 mm | 6 | |
| Sept. 2 |  Overcast | 26° /15° | 0 mm | 6 | |
| Sept. 3 |  Sunny | 24° /12° | 0 mm | 6 | |
| Sept. 4 | Sunny | 25° /13° | 0 mm | 6 | |
| Sept. 5 | Sunny | 27° /16° | 24.4 mm | 7 | |
| Sept. 6 | Overcast | 26° /17° | 4.2 mm | 6 | |
| Sept. 7 | Light rain shower | 19° /12° | 46.4 mm | 5 | |
| Sept. 8 | Sunny | 22° /10° | 0 mm | 6 | |
| Sept. 9 |  Partly cloudy | 23° /11° | 0 mm | 6 | |
| Sept. 10 | Sunny | 23° /13° | 0 mm | 6 | |
| Sept. 11 | Sunny | 26° /13° | 0 mm | 7 | |
| Sept. 12 | Sunny | 26° /15° | 0 mm | 7 | |
| Sept. 13 | Sunny | 26° /15° | 0 mm | 6 | |
| Sept. 14 | Sunny | 28° /16° | 0 mm | 7 | |
| Sept. 15 | Partly cloudy | 27° /16° | 0 mm | 7 | |
| Sept. 16 | Patchy rain possible | 24° /18° | 1.5 mm | 1.3 | |
| Sept. 17 | Patchy rain possible | 17° /15° | 3.7 mm | 0.9 | |
| Sept. 18 |  Cloudy | 26° /16° | 0 mm | 1.4 | |
| Sept. 19 | Sunny | 28° /17° | 0 mm | 1.4 | |
| Sept. 20 | Sunny | 23° /11° | 0 mm | 0 | |
| Sept. 21 | Sunny | 23° /11° | 0 mm | 5 | |
| Sept. 22 | Sunny | 25° /11° | 0 mm | 5 | |
| Sept. 23 | Sunny | 29° /13° | 0 mm | 6 | |
| Sept. 24 | Partly cloudy | 30° /17° | 0 mm | 6 | |
| Sept. 25 | Patchy rain possible | 28° /19° | 1.9 mm | 5 | |
| Sept. 26 | Partly cloudy | 25° /15° | 0 mm | 5 | |
| Sept. 27 | Sunny | 26° /13° | 0 mm | 5 | |
| Sept. 28 | Sunny | 26° /11° | 0 mm | 5 | |
| Sept. 29 | Sunny | 30° /14° | 0 mm | 6 | |
| Sept. 30 | Overcast | 18° /15° | 0 mm | 4 | |
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Parsippany in September - FAQ
September rainfall patterns in Parsippany
UV exposure in Parsippany during September
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Where is Parsippany?Get accurate weather forecasts for Parsippany, located at latitude 40.858 and longitude -74.426. Stay updated with localized weather information tailored for Parsippany.