September weather forecast
Knowlesville, NY

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Weather in September

September, the first month of the autumn in Knowlesville, is still a pleasant month, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 70.7°F (21.5°C).

Temperature

The arrival of September correlates with a minor temperature reduction, down from August's warm 76.6°F (24.8°C) to an agreeable 70.7°F (21.5°C). Knowlesville in September experiences a low-temperature average of 57.7°F (14.3°C).

Humidity

The least humid month is September, with an average relative humidity of 75%.

Rainfall

In Knowlesville, New York, in September, during 14.9 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Knowlesville, during the entire year, the rain falls for 170.5 days and collects up to 27.56" (700mm) of precipitation.

Snowfall

June through September are months without snowfall in Knowlesville.

Daylight

In September, the average length of the day in Knowlesville is 12h and 29min.
On the first day of the month, sunrise is at 6:38 am and sunset at 7:47 pm. On the last day of September, in Knowlesville, sunrise is at 7:10 am and sunset at 6:55 pm EDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

The average daily maximum UV index in September in Knowlesville is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Frequently asked questions

What are the temperatures in Knowlesville in September?

September temperatures in Knowlesville vary between a high-temperature of 70.7°F (21.5°C) and a low-temperature of 57.7°F (14.3°C).

What is the least humid month in Knowlesville?

September is the least humid month, with an average relative humidity of 75%.

What is the average humidity in September in Knowlesville?

In Knowlesville, the average relative humidity in September is 75%.

How much does it rain in Knowlesville in September?

In Knowlesville, during September, the rain falls for 14.9 days and regularly aggregates up to 1.89" (48mm) of precipitation.

When it does not snow in Knowlesville?

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

Does it snow in Knowlesville in September?

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

How many hours of daylight does Knowlesville have in September?

In Knowlesville, New York, the average day length in September is 12h and 29min.

What time are sunrise and sunset in September in Knowlesville?

On the first day of September in Knowlesville, sunrise is at 6:38 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:55 pm EDT.

How long on average sun shines in September in Knowlesville?

In September, the average sunshine duration in Knowlesville is 9.4h.

How high is the UV index in September in Knowlesville?

In Knowlesville, New York, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents 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
Knowlesville, NY

Average temperature in September - Knowlesville, NY
  • Average high temperature in September: 70.7°F

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in September: 57.7°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

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Average pressure in September
Knowlesville, NY

Average pressure in September - Knowlesville, NY
  • Average pressure in September: 30.04"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Knowlesville, NY

Average wind speed in September - Knowlesville, NY
  • Average wind speed in September: 8.3mph

The windiest month (with the highest average wind speed) is January (12.2mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).

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Average humidity in September
Knowlesville, NY

Average humidity in September - Knowlesville, NY
  • Average humidity in September: 75%

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is September (75%).

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Average rainfall in September
Knowlesville, NY

Average rainfall in September - Knowlesville, NY
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in September
Knowlesville, NY

Average rainfall days in September - Knowlesville, NY
  • Average rainfall days in September: 14.9 days

The month with the highest number of rainy days is October (17.6 days).
The month with the least rainy days is February (8 days).

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Average snowfall in September
Knowlesville, NY

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

The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Knowlesville, NY

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

The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Knowlesville, 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 0min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

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Average sunshine days in September
Knowlesville, NY

Average sunshine days in September - Knowlesville, NY
  • Average sunshine days in September: 13.3 days

The month with the most sunshine days is September (13.3 days).
The month with the least sunshine days is February (6 days).

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Average UV index in September
Knowlesville, NY

Average UV index in September - Knowlesville, NY
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in September
Knowlesville, NY

Average cloud cover in September - Knowlesville, NY
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in September
Knowlesville, NY

Average visibility in September - Knowlesville, NY
  • Average visibility in September: 6mi

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

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Knowlesville, New York, USA

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