September weather forecast
Swan Lake, NY

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Weather in September

September, the first month of the autumn in Swan Lake, is still a pleasant month, with an average temperature ranging between max 71.2°F (21.8°C) and min 50.9°F (10.5°C).

Temperature

The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's warm 78.4°F (25.8°C) to a pleasant 71.2°F (21.8°C). During the nights in September, Swan Lake experiences a consistent average temperature of 50.9°F (10.5°C).

Humidity

In September, the average relative humidity is 80%.

Rainfall

In Swan Lake, in September, it is raining for 11.9 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, there are 153.7 rainfall days, and 26.73" (679mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September is 12h and 28min.
On the first day of September, sunrise is at 6:25 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm EDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index in Swan Lake is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, a daily UV index of 3 turns into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Swan Lake in September?

In Swan Lake, 71.2°F (21.8°C) is the average high-temperature and 50.9°F (10.5°C) is the average low-temperature during September. In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is appraised at 86°F (30°C).

What is the average humidity in September?

The average relative humidity in September is 80%.

How much does it rain in September?

In Swan Lake, in September, it is raining for 11.9 days, with typically 1.81" (46mm) of accumulated precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In Swan Lake, New York, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Swan Lake have in September?

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

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:25 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm EDT.

How long on average sun shines in September in Swan Lake?

The average sunshine duration in September is 8.5h.

How high is the UV index in September?

In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from 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
Swan Lake, NY

Average temperature in September - Swan Lake, NY
  • Average high temperature in September: 71.2°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in September: 50.9°F

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in September
Swan Lake, NY

Average pressure in September - Swan Lake, 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
Swan Lake, NY

Average wind speed in September - Swan Lake, NY
  • Average wind speed in September: 5.2mph

The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Swan Lake, NY

Average humidity in September - Swan Lake, NY
  • Average humidity in September: 80%

The months with the highest relative humidity are February and December (85%).
The month with the lowest relative humidity is July (77%).

Average rainfall in September
Swan Lake, NY

Average rainfall in September - Swan Lake, NY
  • Average rainfall in September: 1.81"

The wettest month (with the highest rainfall) is May (2.8").
The driest months (with the least rainfall) are January and February (1.65").

Average rainfall days in September
Swan Lake, NY

Average rainfall days in September - Swan Lake, NY
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (7.5 days).

Average snowfall in September
Swan Lake, NY

Average snowfall in September - Swan Lake, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is December (5.04").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Swan Lake, NY

Average snowfall days in September - Swan Lake, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Swan Lake, NY

Average daylight in September / Average sunshine in September - Swan Lake, NY
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • 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: 3h and 54min).

Average sunshine days in September
Swan Lake, NY

Average sunshine days in September - Swan Lake, NY
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in September
Swan Lake, NY

Average UV index in September - Swan Lake, NY
  • Average UV index in September: 3

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in September
Swan Lake, NY

Average cloud cover in September - Swan Lake, NY
  • Average cloud cover in September: 42

The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 38).

Average visibility in September
Swan Lake, NY

Average visibility in September - Swan Lake, NY
  • Average visibility in September: 4mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (5mi).
The months with the lowest visibility are May and September (4mi).

Swan Lake, New York, USA

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