September weather forecast
Amityville, PA

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Weather in September

September, the first month of the autumn in Amityville, is also a moderately hot month, with an average temperature varying between 75°F (23.9°C) and 56.5°F (13.6°C).

Temperature

In Amityville, the average high-temperature in September gently drops from a warm 81.1°F (27.3°C) in August to a still moderately hot 75°F (23.9°C). An average minimum temperature of 56.5°F (13.6°C) is recorded during the month of September.

Humidity

In Amityville, Pennsylvania, the average relative humidity in September is 79%.

Rainfall

September is the month with the least rainfall in Amityville. Rain falls for 12.9 days and accumulates 1.77" (45mm) of precipitation.

Snowfall

In Amityville, snow does not fall in June through September.

Daylight

In Amityville, the average length of the day in September is 12h and 27min.
On the first day of September in Amityville, sunrise is at 6:31 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:46 pm EDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 4 during September leads to these advisories:
Put precautions into practice - Guidance to elude sunburn is provided. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Amityville in September?

Amityville in September has an average high-temperature of 75°F (23.9°C) and an average low-temperature of 56.5°F (13.6°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 86°F (30°C).

What is the average humidity in September?

In Amityville, the average relative humidity in September is 79%.

What is the driest month in Amityville?

September is the month with the least rainfall. Rain falls for 12.9 days and accumulates 1.77" (45mm) of precipitation.

How many days does it rain in September?

In Amityville, in September, during 12.9 rainfall days, 1.77" (45mm) of precipitation is typically accumulated.

When it does not snow?

In Amityville, snow does not fall in June through September.

Does it snow in September?

In Amityville, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

The average day length in September is 12h and 27min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:31 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:46 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.9h.

How high is the UV index in September?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
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
Amityville, PA

Average temperature in September - Amityville, PA
  • Average high temperature in September: 75°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in September: 56.5°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

Average pressure in September
Amityville, PA

Average pressure in September - Amityville, PA
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Amityville, PA

Average wind speed in September - Amityville, PA
  • Average wind speed in September: 5.4mph

The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Amityville, PA

Average humidity in September - Amityville, PA
  • Average humidity in September: 79%

The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).

Average rainfall in September
Amityville, PA

Average rainfall in September - Amityville, PA
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in September
Amityville, PA

Average rainfall days in September - Amityville, PA
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in September
Amityville, PA

Average snowfall in September - Amityville, PA
  • Average snowfall in September: 0"

The month with the highest snowfall is March (3.03").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Amityville, PA

Average snowfall days in September - Amityville, PA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Amityville, PA

Average daylight in September / Average sunshine in September - Amityville, PA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in September
Amityville, PA

Average sunshine days in September - Amityville, PA
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is May (11.6 days).

Average UV index in September
Amityville, PA

Average UV index in September - Amityville, PA
  • Average UV index in September: 4

The months with the highest UV index are May, June and July (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
Amityville, PA

Average cloud cover in September - Amityville, PA
  • Average cloud cover in September: 38

The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in September
Amityville, PA

Average visibility in September - Amityville, PA
  • Average visibility in September: 5mi

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

Amityville, Pennsylvania, USA

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