September weather forecast and climate
South Orange, NJ

Weather in September

The first month of the autumn, September, is also a moderately hot month in South Orange, New Jersey, 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 South Orange, the average high-temperature marginally drops, from 81.9°F (27.7°C) in August, to a still moderately hot 75°F (23.9°C). In South Orange, the average low-temperature is 60.1°F (15.6°C).

Humidity

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

Rainfall

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

Snowfall

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

Daylight

The average length of the day in South Orange, New Jersey, is 12.4h.

Sunshine

In September, the average sunshine in South Orange is 8.9h.

UV index

In South Orange, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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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).

What is the average humidity in September in South Orange?

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

How much does it rain in South Orange in September?

In September, in South Orange, New Jersey, the rain falls for 13.1 days. Throughout September, 2.01" (51mm) of precipitation is accumulated.

What is the driest month in South Orange?

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

When it does not snow in South Orange?

In South Orange 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 length of the day in South Orange is 12.4h.

How long on average sun shines in September in South Orange?

In September, the average sunshine in South Orange is 8.9h.

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

In South Orange, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.

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"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

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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%

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

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").
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).
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: 12.4h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 8.9h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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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

Months with the highest UV index are June, July and August (UV index 6).
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).
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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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