September weather forecast and climate
New Brunswick, NJ

An aerial panorama of the city of Brunswick, New Jersey, seen with its deep tree cover, a large river, and bridges over the river
An aerial panorama of the city of Brunswick, New Jersey, seen with its deep tree cover, a large river, and bridges over the river

Weather in September

September, the first month of the autumn, in New Brunswick, is also a moderately hot month, with temperature in the range of an average high of 75.9°F (24.4°C) and an average low of 59.9°F (15.5°C).

Temperature

In New Brunswick, the average high-temperature slightly decreases, from 82.6°F (28.1°C) in August, to a still moderately hot 75.9°F (24.4°C). The average low-temperature, in New Brunswick, is 59.9°F (15.5°C).

Humidity

In September, the average relative humidity in New Brunswick is 75%.

Rainfall

The month with the least rainfall in New Brunswick is September when the rain falls for 12.6 days and typically collects 1.61" (41mm) of precipitation.

Snowfall

In New Brunswick snow does not fall in June through October.

Daylight

In New Brunswick, the average length of the day is 12.4h.

Sunshine

In New Brunswick, New Jersey, the average sunshine is 8.5h.

UV index

In New Brunswick, New Jersey, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 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. 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 New Brunswick?

The average high-temperature, in September, in New Brunswick, New Jersey, is 75.9°F (24.4°C), while the average low-temperature is 59.9°F (15.5°C).

What is the average humidity in September in New Brunswick?

The average relative humidity in September is 75%.

How much does it rain in New Brunswick in September?

In New Brunswick, New Jersey, in September, during 12.6 rainfall days, 1.61" (41mm) of precipitation is typically accumulated.

What is the driest month in New Brunswick?

The month with the least rainfall in New Brunswick, New Jersey, is September when the rain falls for 12.6 days and typically collects 1.61" (41mm) of precipitation.

When it does not snow in New Brunswick?

June through October are months without snowfall.

How many hours of daylight does New Brunswick have in September?

In New Brunswick, New Jersey, the average length of the day in September is 12.4h.

How long on average sun shines in September in New Brunswick?

In New Brunswick, the average sunshine in September is 8.5h.

What is the UV index reading in September in New Brunswick?

In New Brunswick, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in September
New Brunswick, NJ

Average temperature in September - New Brunswick, NJ
  • Average high temperature in September: 75.9°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 (36.7°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

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Average pressure in September
New Brunswick, NJ

Average pressure in September - New Brunswick, 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
New Brunswick, NJ

Average wind speed in September - New Brunswick, NJ
  • Average wind speed in September: 6.4mph

The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).

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Average humidity in September
New Brunswick, NJ

Average humidity in September - New Brunswick, NJ
  • Average humidity in September: 75%

Months with the highest relative humidity are February, October and December (77%).
Months with the lowest relative humidity are April and August (72%).

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Average rainfall in September
New Brunswick, NJ

Average rainfall in September - New Brunswick, NJ
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in September
New Brunswick, NJ

Average rainfall days in September - New Brunswick, NJ
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in September
New Brunswick, NJ

Average snowfall in September - New Brunswick, NJ
  • Average snowfall in September: 0"

The month with the highest snowfall is March (3.5").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
New Brunswick, NJ

Average snowfall days in September - New Brunswick, NJ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.4 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
New Brunswick, NJ

Average daylight in September / Average sunshine in September - New Brunswick, NJ
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.6h).

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Average sunshine days in September
New Brunswick, NJ

Average sunshine days in September - New Brunswick, NJ
  • Average sunshine days in September: 15 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (11.1 days).

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Average UV index in September
New Brunswick, NJ

Average UV index in September - New Brunswick, NJ
  • Average UV index in September: 5

Months with the highest UV index are May, 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
New Brunswick, NJ

Average cloud cover in September - New Brunswick, NJ
  • Average cloud cover in September: 39

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 33).

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Average visibility in September
New Brunswick, NJ

Average visibility in September - New Brunswick, NJ
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

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