September weather forecast
Weehawken, NJ

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Weather in September

September in Weehawken initiates the descent into fall. Even though temperatures start to decline, with average highs dipping to 75°F (23.9°C), they remain warm enough for outdoor activities. The increased rainfall reflects the typical autumnal climate changes. Coupled with the shortening daylight hours, an undeniable transition from summer to fall begins to unfold. Therefore, September can be seen as a transitional month in Weehawken's calendar, as the heat of summer slowly gives way to autumn's chill.

Temperature

With the arrival of September, Weehawken notices a mild change in the average high-temperature, sliding from August's warm 82°F (27.8°C) to a still moderately hot 75°F (23.9°C). An average low-temperature of 61.7°F (16.5°C) is anticipated throughout the nights during September.

Humidity

In September, the average relative humidity is 73%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12.5 days and typically collects 2.2" (56mm) of precipitation.

Snowfall

May through October are months without snowfall.

Ocean temperature

In Weehawken, the average seawater temperature in September is 70.2°F (21.2°C).
Note: In water with a temperature of 70.2°F (21.2°C), most individuals do not find swimming enjoyable. As the temperature falls from 69.8°F (21°C) to 59°F (15°C), breathing control becomes more difficult.

Daylight

In September, the average length of the day is 12h and 27min.
On the first day of the month, sunrise is at 6:23 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:39 pm EDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 5 during September translates into these guidelines:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Take caution! The UV rays from the Sun gain strength from sand and water reflections.
Updated: Jun 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

During September, Weehawken experiences an average high-temperature of 75°F (23.9°C) and a low-temperature of 61.7°F (16.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 86°F (30°C).

What is the average humidity in September?

In Weehawken, the average relative humidity in September is 73%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 12.5 days and typically collects 2.2" (56mm) of precipitation.

How much does it rain in Weehawken in September?

In September, the rain falls for 12.5 days. Throughout September, 2.2" (56mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

What is the ocean temperature in September?

In September, the average ocean temperature is 70.2°F (21.2°C). Swimming in 70.2°F (21.2°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

How many hours of daylight does Weehawken have in September?

In September, the average day length is 12h and 27min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:23 am and sunset at 7:27 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 Weehawken have in September?

In Weehawken, New Jersey, the average sunshine duration in September is 8.9h.

What is the UV index intensity in September?

In Weehawken, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's 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
Weehawken, NJ

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

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (36.3°F).

  • Average low temperature in September: 61.7°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in September
Weehawken, NJ

Average pressure in September - Weehawken, NJ
  • Average pressure in September: 30.05"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).

Average wind speed in September
Weehawken, NJ

Average wind speed in September - Weehawken, NJ
  • Average wind speed in September: 7.1mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

Average humidity in September
Weehawken, NJ

Average humidity in September - Weehawken, NJ
  • Average humidity in September: 73%

The months with the highest relative humidity are February and December (76%).
The month with the lowest relative humidity is August (70%).

Average rainfall in September
Weehawken, NJ

Average rainfall in September - Weehawken, NJ
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (2.2").

Average rainfall days in September
Weehawken, NJ

Average rainfall days in September - Weehawken, NJ
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (9 days).

Average snowfall in September
Weehawken, NJ

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

The month with the highest snowfall is March (3.86").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Weehawken, NJ

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

The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in September
Weehawken, NJ

Average sea temperature in September - Weehawken, NJ
  • Average sea temperature in September: 70.1°F

The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).

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

Average daylight in September / Average sunshine in September - Weehawken, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in September
Weehawken, NJ

Average sunshine days in September - Weehawken, NJ
  • Average sunshine days in September: 15 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (11.7 days).

Average UV index in September
Weehawken, NJ

Average UV index in September - Weehawken, NJ
  • Average UV index in September: 5

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
Weehawken, NJ

Average cloud cover in September - Weehawken, NJ
  • Average cloud cover in September: 35

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in September
Weehawken, NJ

Average visibility in September - Weehawken, 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).

Weehawken, New Jersey, USA

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