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
September brings a slight decrease in temperature, down from a warm 82.9°F (28.3°C) in August to a still moderately hot 76.1°F (24.5°C). In Chatsworth, the average nighttime temperature during September is a comfortable 61.3°F (16.3°C).Humidity
In September, the average relative humidity in Chatsworth, New Jersey, is 78%.Rainfall
In Chatsworth, in September, it is raining for 10.1 days, with typically 0.71" (18mm) of accumulated precipitation. In Chatsworth, during the entire year, the rain falls for 120.9 days and collects up to 12.8" (325mm) of precipitation.Snowfall
May through October are months without snowfall in Chatsworth, New Jersey.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:29 pm. On the last day of September, in Chatsworth, sunrise is at 6:54 am and sunset at 6:41 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Chatsworth?
What is the average humidity in September in Chatsworth?
How much does it rain in Chatsworth in September?
When it does not snow in Chatsworth?
What is the average length of the day in September in Chatsworth?
What time are sunrise and sunset in September in Chatsworth?
How many hours of sunshine does Chatsworth have in September?
What is the UV index reading in September in Chatsworth?
Average temperature in September
Chatsworth, NJ
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in September
Chatsworth, NJ
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Chatsworth, NJ
- Average wind speed in September: 6.5mph
The windiest months (with the highest average wind speed) are February, March and April (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Chatsworth, NJ
- Average humidity in September: 78%
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Chatsworth, NJ
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Chatsworth, NJ
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in September
Chatsworth, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Chatsworth, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Chatsworth, NJ
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Chatsworth, NJ
- Average sunshine days in September: 17 days
The months with the most sunshine days are January and November (21.3 days).
The month with the least sunshine days is July (13 days).
Average UV index in September
Chatsworth, NJ
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Chatsworth, NJ
- Average cloud cover in September: 36
The months with the most cloud cover are February and March (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in September
Chatsworth, NJ
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Chatsworth, New Jersey, USA
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