Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The average high-temperature shows a slight dip in September, from August's warm 75.9°F (24.4°C) to a pleasant 69.3°F (20.7°C). Morristown, in September, observes a steady average low-temperature of 51.3°F (10.7°C).Humidity
In Morristown, the average relative humidity in September is 79%.Rainfall
In Morristown, New York, in September, during 11.7 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. In Morristown, during the entire year, the rain falls for 141.7 days and collects up to 26.34" (669mm) of precipitation.Snowfall
In Morristown, snow does not fall in June through September.Daylight
In September, the average length of the day in Morristown is 12h and 31min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:44 pm EDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 3 during September leads to these instructions:
Undertake precautions - Guarding against sun damage is counselled. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Morristown?
What is the average humidity in September in Morristown?
How many days does it rain in September in Morristown?
When it does not snow in Morristown?
Does it snow in Morristown in September?
How many hours of daylight does Morristown have in September?
When are sunrise and sunset in September in Morristown?
How long on average sun shines in September in Morristown?
What is the UV index reading in September in Morristown?
Average temperature in September
Morristown, NY
- Average high temperature in September: 69.3°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in September
Morristown, NY
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Morristown, NY
- Average wind speed in September: 6.9mph
The windiest month (with the highest average wind speed) is February (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Morristown, NY
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Morristown, NY
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is August (2.76").
The driest months (with the least rainfall) are March and November (1.69").
Average rainfall days in September
Morristown, NY
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is January (5 days).
Average snowfall in September
Morristown, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Morristown, NY
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Morristown, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).
Average sunshine days in September
Morristown, NY
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in September
Morristown, NY
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Morristown, NY
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Morristown, NY
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Morristown, New York, USA
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