September weather forecastSouth Bound Brook, NJ
September
Weather in September
September, the first month of the autumn in South Bound Brook, is still a warm month, with an average temperature ranging between min 58.5°F (14.7°C) and max 75.4°F (24.1°C).Temperature
As September begins, there is a minor decrease in the average high-temperature, softly falling from 82.6°F (28.1°C) in August to a still warm 75.4°F (24.1°C). South Bound Brook reports an average low-temperature of 58.5°F (14.7°C) during the nights of September.Humidity
In South Bound Brook, the average relative humidity in September is 76%.Rainfall
The month with the least rainfall in South Bound Brook is September, when the rain falls for 12 days and typically collects 1.57" (40mm) of precipitation.Snowfall
June through September are months without snowfall in South Bound Brook.Daylight
In South Bound Brook, the average length of the day in September is 12h and 27min.On the first day of September in South Bound Brook, sunrise is at 6:26 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:41 pm EDT.
Sunshine
The average sunshine in September in South Bound Brook is 8.5h.UV index
In South Bound Brook, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. To avoid the Sun's strongest rays, limit exposure around the mid-day period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
South Bound Brook, NJ
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in September
South Bound Brook, NJ
- Average pressure in September: 30.06"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
South Bound Brook, NJ
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in September
South Bound Brook, NJ
- Average humidity in September: 76%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in September
South Bound Brook, NJ
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is December (3.31").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in September
South Bound Brook, NJ
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in September
South Bound Brook, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
South Bound Brook, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
South Bound Brook, NJ
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
South Bound Brook, NJ
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in September
South Bound Brook, NJ
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
South Bound Brook, NJ
- Average cloud cover in September: 40
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
South Bound Brook, NJ
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
