September weather forecast
Heritage Hills, NY

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Heritage Hills, New York, with an average temperature fluctuating between 73.6°F (23.1°C) and 56.1°F (13.4°C).

Temperature

The shift from August to September includes a small decrease in the average high-temperature, from a warm 81.1°F (27.3°C) to a still moderately hot 73.6°F (23.1°C). In September, Heritage Hills records an average nighttime temperature of 56.1°F (13.4°C).

Humidity

In September, the average relative humidity in Heritage Hills is 78%.

Rainfall

In Heritage Hills, in September, it is raining for 12 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, in Heritage Hills, there are 150.6 rainfall days, and 29.09" (739mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Heritage Hills, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:21 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:37 pm EDT.

Sunshine

In September, the average sunshine is 8.7h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily high UV index of 4 in September leads to these guidelines:
Exercise prevention - Precautions against solar damage are endorsed. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Heritage Hills in September?

The high-temperature, in September, in Heritage Hills, is 73.6°F (23.1°C), while the low-temperature averages to 56.1°F (13.4°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is estimated at 86°F (30°C).

What is the average humidity in September?

The average relative humidity in September is 78%.

How many days does it rain in September?

In Heritage Hills, during September, the rain falls for 12 days and regularly aggregates up to 1.93" (49mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In Heritage Hills, New York, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:21 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:37 pm EDT.

How long on average sun shines in September?

In Heritage Hills, the average sunshine duration in September is 8.7h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Heritage Hills, NY

Average temperature in September - Heritage Hills, NY
  • Average high temperature in September: 73.6°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in September: 56.1°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in September
Heritage Hills, NY

Average pressure in September - Heritage Hills, NY
  • 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).

Average wind speed in September
Heritage Hills, NY

Average wind speed in September - Heritage Hills, NY
  • Average wind speed in September: 5.4mph

The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Heritage Hills, NY

Average humidity in September - Heritage Hills, NY
  • Average humidity in September: 78%

The months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (73%).

Average rainfall in September
Heritage Hills, NY

Average rainfall in September - Heritage Hills, NY
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is December (2.99").
The driest month (with the least rainfall) is February (1.73").

Average rainfall days in September
Heritage Hills, NY

Average rainfall days in September - Heritage Hills, NY
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is June (16.6 days).
The month with the least rainy days is January (7 days).

Average snowfall in September
Heritage Hills, NY

Average snowfall in September - Heritage Hills, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Heritage Hills, NY

Average snowfall days in September - Heritage Hills, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Heritage Hills, NY

Average daylight in September / Average sunshine in September - Heritage Hills, NY
  • 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 12min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in September
Heritage Hills, NY

Average sunshine days in September - Heritage Hills, NY
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is January (18.5 days).
The month with the least sunshine days is June (12.2 days).

Average UV index in September
Heritage Hills, NY

Average UV index in September - Heritage Hills, NY
  • Average UV index in September: 4

The months with the highest UV index are June 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
Heritage Hills, NY

Average cloud cover in September - Heritage Hills, NY
  • Average cloud cover in September: 37

The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in September
Heritage Hills, NY

Average visibility in September - Heritage Hills, NY
  • Average visibility in September: 6mi

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

Heritage Hills, New York, USA

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