Morris County (Parsippany)
September
Weather in Morris County for September 2025
Your guide to Morris County weather in September - trends and predictions
In general, the average temperature in Morris County at the beginning of September is 23.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.7 °F by the end of September.
Morris County sees moderate rainfall in September, averaging 8 rainy days.
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22
Dry days
8
Rainy days
0
Snow days
23°/15°
Temperatures
14 km/h
Avg max wind
69 %
Avg humidity
Morris County in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  26° | 2  24° | 3  23° | 4 24° | 5 25° | 6 22° | 7 21° |
| 8 21° | 9  23° | 10 25° | 11 26° | 12 26° | 13 28° | 14 28° |
| 15 27° | 16 25° | 17 21° | 18  21° | 19 24° | 20 21° | 21 24° |
| 22 22° | 23 19° | 24  19° | 25  18° | 26 24° | 27 22° | 28 21° |
| 29 16° | 30 18° |
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Temperatures trend during September in Morris County
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Light rain shower | 26° /20° | 3.3 mm | 6 | |
| Sept. 2 | Overcast | 24° /14° | 0 mm | 5 | |
| Sept. 3 | Sunny | 23° /10° | 0 mm | 6 | |
| Sept. 4 | Sunny | 24° /11° | 0 mm | 6 | |
| Sept. 5 | Sunny | 25° /13° | 0 mm | 7 | |
| Sept. 6 | Overcast | 22° /14° | 0 mm | 5 | |
| Sept. 7 | Light rain shower | 21° /12° | 5.7 mm | 5 | |
| Sept. 8 | Sunny | 21° /8° | 0 mm | 6 | |
| Sept. 9 | Partly cloudy | 23° /10° | 0 mm | 6 | |
| Sept. 10 | Sunny | 25° /13° | 0 mm | 7 | |
| Sept. 11 | Sunny | 26° /12° | 0 mm | 7 | |
| Sept. 12 | Sunny | 26° /14° | 0 mm | 7 | |
| Sept. 13 | Sunny | 28° /14° | 0 mm | 7 | |
| Sept. 14 | Sunny | 28° /16° | 0 mm | 7 | |
| Sept. 15 | Partly cloudy | 27° /16° | 0 mm | 7 | |
| Sept. 16 | Overcast | 25° /14° | 0 mm | 6 | |
| Sept. 17 | Overcast | 21° /16° | 0 mm | 5 | |
| Sept. 18 | Mist | 21° /16° | 0 mm | 5 | |
| Sept. 19 | Overcast | 24° /17° | 7.5 mm | 5 | |
| Sept. 20 | Overcast | 21° /18° | 0 mm | 5 | |
| Sept. 21 | Partly cloudy | 24° /18° | 0 mm | 6 | |
| Sept. 22 | Overcast | 22° /15° | 0 mm | 5 | |
| Sept. 23 | Overcast | 19° /14° | 0 mm | 4 | |
| Sept. 24 | Cloudy | 19° /14° | 0 mm | 4 | |
| Sept. 25 | Heavy rain at times | 18° /16° | 41.8 mm | 4 | |
| Sept. 26 | Heavy rain at times | 24° /18° | 42.2 mm | 5 | |
| Sept. 27 | Light rain shower | 22° /16° | 8.8 mm | 5 | |
| Sept. 28 | Overcast | 21° /17° | 3.4 mm | 5 | |
| Sept. 29 | Mist | 16° /15° | 2.5 mm | 4 | |
| Sept. 30 | Overcast | 18° /15° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Morris 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 Morris County forecast closer to your planned date for the most up-to-date weather information.
Morris County in September - FAQ
What are the expected maximum and minimum temperatures in Morris County during September?
During September, expect a variety of temperatures with highs around 23° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Morris County during September?
Significant rainfall exceeding 115.2 mm is expected in Morris County during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Morris County during September?
The average wind speed in Morris County during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Morris County
Explore the daily rainfall trends and prepare for Morris Countys September weather 💧
UV exposure in Morris County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Morris County?Get accurate weather forecasts for Morris County, located at latitude 40.858 and longitude -74.426. Stay updated with localized weather information tailored for Morris County.
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