September weather forecast
Selkirk, NY

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Weather in September

The first month of the autumn, September, is also an agreeable month in Selkirk, New York, with temperature in the range of an average low of 51.1°F (10.6°C) and an average high of 71.2°F (21.8°C).

Temperature

As September begins, there is a minor decrease in the average high-temperature, softly falling from a moderately hot 79.3°F (26.3°C) in August to a pleasant 71.2°F (21.8°C). Selkirk's average low-temperature for the month of September records at a fresh 51.1°F (10.6°C).

Humidity

In September, the average relative humidity is 79%.

Rainfall

In Selkirk, in September, during 11.5 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Selkirk, during the entire year, the rain falls for 153.2 days and collects up to 30" (762mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 29min.
On the first day of the month, sunrise is at 6:20 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:37 pm EDT.

Sunshine

In Selkirk, New York, the average sunshine in September is 8.9h.

UV index

In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The UV index of 3 during September leads to these advisories:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Jun 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature in Selkirk?

The average high-temperature, in September, in Selkirk, is 71.2°F (21.8°C), while the average low-temperature is 51.1°F (10.6°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in July is computed to be 86°F (30°C).

What is the average humidity in September?

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

How many days does it rain in September?

In September, the rain falls for 11.5 days. Throughout September, 2.13" (54mm) of precipitation is accumulated.

When it does not snow?

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

Does it snow in Selkirk in September?

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

What is the average length of the day in September?

In Selkirk, the average day length in September is 12h and 29min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:20 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:37 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?

In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
Selkirk, NY

Average temperature in September - Selkirk, 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 (29.1°F).

  • Average low temperature in September: 51.1°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

Average pressure in September
Selkirk, NY

Average pressure in September - Selkirk, NY
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in September
Selkirk, NY

Average wind speed in September - Selkirk, NY
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in September
Selkirk, NY

Average humidity in September - Selkirk, NY
  • Average humidity in September: 79%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (75%).

Average rainfall in September
Selkirk, NY

Average rainfall in September - Selkirk, NY
  • Average rainfall in September: 2.13"

The wettest month (with the highest rainfall) is July (3.43").
The driest month (with the least rainfall) is January (1.73").

Average rainfall days in September
Selkirk, NY

Average rainfall days in September - Selkirk, NY
  • Average rainfall days in September: 11.5 days

The months with the highest number of rainy days are May and July (17.1 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in September
Selkirk, NY

Average snowfall in September - Selkirk, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is February (5.79").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Selkirk, NY

Average snowfall days in September - Selkirk, NY
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Selkirk, NY

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

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

  • Average sunshine in September: 8h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

Average sunshine days in September
Selkirk, NY

Average sunshine days in September - Selkirk, NY
  • Average sunshine days in September: 16.1 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (11.6 days).

Average UV index in September
Selkirk, NY

Average UV index in September - Selkirk, NY
  • Average UV index in September: 3

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in September
Selkirk, NY

Average cloud cover in September - Selkirk, NY
  • Average cloud cover in September: 36

The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in September
Selkirk, NY

Average visibility in September - Selkirk, NY
  • Average visibility in September: 5mi

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

Selkirk, New York, USA

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