September weather forecast
South Orange, NJ

Weather in September

September, the first month of the autumn in South Orange, is also a moderately hot month, with temperature in the range of an average high of 75°F (23.9°C) and an average low of 60.1°F (15.6°C).

Temperature

In September, the average high-temperature slightly decreases from 81.9°F (27.7°C) in August to a still moderately hot 75°F (23.9°C). In South Orange, New Jersey, in September, the average low-temperature is 60.1°F (15.6°C).

Humidity

The average relative humidity in September in South Orange, New Jersey, is 74%.

Rainfall

The month with the least rainfall is September, when the rain falls for 13.1 days and typically collects 2.01" (51mm) of precipitation.

Snowfall

May through October are months without snowfall in South Orange.

Daylight

The average length of the day in September in South Orange is 12h and 27min.
On the first day of the month, sunrise is at 6:24 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:41 pm EDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in South Orange?

In September, in South Orange, New Jersey, the average high-temperature is 75°F (23.9°C), and the average low-temperature is 60.1°F (15.6°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in August is calculated to be 86°F (30°C).

What is the average humidity in September in South Orange?

In South Orange, New Jersey, the average relative humidity in September is 74%.

What is the driest month in South Orange?

September is the month with the least rainfall in South Orange, New Jersey. Rain falls for 13.1 days and accumulates 2.01" (51mm) of precipitation.

How much does it rain in South Orange in September?

In South Orange, New Jersey, during September, the rain falls for 13.1 days and regularly aggregates up to 2.01" (51mm) of precipitation.

When it does not snow in South Orange?

In South Orange, New Jersey, snow does not fall in May through October.

What is the average length of the day in September in South Orange?

In September, the average day length in South Orange, New Jersey, is 12h and 27min.

When are sunrise and sunset in September in South Orange?

On the first day of September in South Orange, New Jersey, sunrise is at 6:24 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:41 pm EDT.

How many hours of sunshine does South Orange have in September?

The average sunshine duration in September in South Orange, New Jersey, is 8.9h.

What is the UV index reading in September in South Orange?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
South Orange, NJ

Average temperature in September - South Orange, NJ
  • Average high temperature in September: 75°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in September: 60.1°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in September
South Orange, NJ

Average pressure in September - South Orange, 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).

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Average wind speed in September
South Orange, NJ

Average wind speed in September - South Orange, NJ
  • Average wind speed in September: 6.5mph

The windiest months (with the highest average wind speed) are January and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity in September
South Orange, NJ

Average humidity in September - South Orange, NJ
  • Average humidity in September: 74%

The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is August (71%).

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Average rainfall in September
South Orange, NJ

Average rainfall in September - South Orange, NJ
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is September (2.01").

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Average rainfall days in September
South Orange, NJ

Average rainfall days in September - South Orange, NJ
  • Average rainfall days in September: 13.1 days

The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is January (9.3 days).

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Average snowfall in September
South Orange, NJ

Average snowfall in September - South Orange, NJ
  • Average snowfall in September: 0"

The month with the highest snowfall is March (3.46").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
South Orange, NJ

Average snowfall days in September - South Orange, NJ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
South Orange, NJ

Average daylight in September / Average sunshine in September - South Orange, NJ
  • Average daylight in September: 12h and 27min

The month with the longest days is June (Average daylight: 15h and 3min).
The month with the shortest days is December (Average daylight: 9h and 19min).

  • Average sunshine in September: 8h and 54min

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 42min).

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Average sunshine days in September
South Orange, NJ

Average sunshine days in September - South Orange, NJ
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (10.9 days).

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Average UV index in September
South Orange, NJ

Average UV index in September - South Orange, 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).

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Average cloud cover in September
South Orange, NJ

Average cloud cover in September - South Orange, NJ
  • Average cloud cover in September: 35

The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 31).

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Average visibility in September
South Orange, NJ

Average visibility in September - South Orange, 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).

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