September weather forecast
Westwood, NJ

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Weather in September

September, the first month of the autumn in Westwood, is still a warm month, with an average temperature ranging between min 58.3°F (14.6°C) and max 75.2°F (24°C).

Temperature

September witnesses a gentle descent in average high-temperature, descending from August's moderately hot 82.9°F (28.3°C) to a still warm 75.2°F (24°C). During the month of September, an average temperature of 58.3°F (14.6°C) is noted during the nights in Westwood.

Humidity

In September, the average relative humidity is 74%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12.9 days and typically collects 1.89" (48mm) of precipitation.

Snowfall

In Westwood, snow does not fall in May through September.

Daylight

The average length of the day in September is 12h and 28min.
On the first day of September, sunrise is at 6:23 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:39 pm EDT.

Sunshine

In Westwood, the average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 4 in September translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. 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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Frequently asked questions

What are the temperatures in Westwood in September?

The average high-temperature and low-temperature during September are 75.2°F (24°C) and 58.3°F (14.6°C) respectively. The average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 87.8°F (31°C).

What is the average humidity in September in Westwood?

In September, the average relative humidity is 74%.

What is the driest month in Westwood?

September is the month with the least rainfall in Westwood. Rain falls for 12.9 days and accumulates 1.89" (48mm) of precipitation.

How much does it rain in Westwood in September?

In Westwood, New Jersey, in September, during 12.9 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

When it does not snow in Westwood?

May through September are months without snowfall in Westwood.

Does it snow in Westwood in September?

In Westwood, New Jersey, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Westwood have in September?

In September, the average day length is 12h and 28min.

When are sunrise and sunset in September in Westwood?

On the first day of September in Westwood, sunrise is at 6:23 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:39 pm EDT.

How many hours of sunshine does Westwood have in September?

In Westwood, the average sunshine duration in September is 8.5h.

What is the UV index reading in September in Westwood?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Westwood, NJ

Average temperature in September - Westwood, NJ
  • Average high temperature in September: 75.2°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in September: 58.3°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 (22.8°F).

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Average pressure in September
Westwood, NJ

Average pressure in September - Westwood, NJ
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
Westwood, NJ

Average wind speed in September - Westwood, NJ
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in September
Westwood, NJ

Average humidity in September - Westwood, NJ
  • Average humidity in September: 74%

The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is August (70%).

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Average rainfall in September
Westwood, NJ

Average rainfall in September - Westwood, NJ
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in September
Westwood, NJ

Average rainfall days in September - Westwood, NJ
  • Average rainfall days in September: 12.9 days

The months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in September
Westwood, NJ

Average snowfall in September - Westwood, NJ
  • Average snowfall in September: 0"

The month with the highest snowfall is February (4.09").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Westwood, NJ

Average snowfall days in September - Westwood, NJ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Westwood, NJ

Average daylight in September / Average sunshine in September - Westwood, NJ
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in September
Westwood, NJ

Average sunshine days in September - Westwood, NJ
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (11.5 days).

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Average UV index in September
Westwood, NJ

Average UV index in September - Westwood, 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
Westwood, NJ

Average cloud cover in September - Westwood, NJ
  • Average cloud cover in September: 39

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in September
Westwood, NJ

Average visibility in September - Westwood, NJ
  • Average visibility in September: 6mi

The 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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Westwood, New Jersey, USA

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