September weather forecast and climate
Allegany, NY

The first month of the autumn, September, is still a pleasant month in Allegany, New York, with average temperature varying between 69.6°F (20.9°C) and 49.5°F (9.7°C).

Temperature

In September, the average high-temperature marginally drops, from a moderately hot 76.3°F (24.6°C) in August, to an agreeable 69.6°F (20.9°C). The average low-temperature, in Allegany, is 49.5°F (9.7°C).

Humidity

The average relative humidity in Allegany is 81%.

Rainfall

The month with the least rainfall is September when the rain falls for 15.4 days and typically collects 1.93" (49mm) of precipitation.

Snowfall

In Allegany, New York, snow does not fall in June through September.

Daylight

In Allegany, the average length of the day is 12.5h.

Sunshine

In Allegany, the average sunshine in September is 8h.

UV index

In Allegany, New York, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Allegany?

The average high-temperature, in September, in Allegany, is 69.6°F (20.9°C), while the average low-temperature is 49.5°F (9.7°C).

What is the average humidity in September in Allegany?

The average relative humidity in September is 81%.

How many days does it rain in September in Allegany?

In Allegany, New York, in September, during 15.4 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

What is the driest month in Allegany?

The month with the least rainfall is September when the rain falls for 15.4 days and typically collects 1.93" (49mm) of precipitation.

Does it snow in Allegany in September?

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

When it does not snow in Allegany?

In Allegany, New York, snow does not fall in June through September.

How many hours of daylight does Allegany have in September?

In Allegany, the average length of the day in September is 12.5h.

How many hours of sunshine does Allegany have in September?

In Allegany, the average sunshine in September is 8h.

What is the UV index reading in September in Allegany?

The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.
Average temperature in September - Allegany, NY
  • Average high temperature in September: 69.6°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in September: 49.5°F

The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

Average pressure in September - Allegany, NY
  • Average pressure in September: 30.06"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.94").

Average wind speed in September - Allegany, NY
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

Average humidity in September - Allegany, NY
  • Average humidity in September: 81%

Months with the highest relative humidity are January and February (89%).
Months with the lowest relative humidity are May, June and July (79%).

Average rainfall in September - Allegany, NY
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is April (3.35").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in September - Allegany, NY
  • Average rainfall days in September: 15.4 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (6.8 days).

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

The month with the highest snowfall is February (10.63").
Months with the least snowfall are June, July, August and September (0").

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

The month with the highest number of snowfall days is January (20.2 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Allegany, NY
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 8h

The month with the most sunshine is July (Average sunshine: 9.4h).
The month with the least sunshine is January (Average sunshine: 2.3h).

Average sunshine days in September - Allegany, NY
  • Average sunshine days in September: 12.4 days

The month with the most sunshine days is September (12.4 days).
The month with the least sunshine days is February (5.9 days).

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

Months with the highest UV index are May, June, July and August (UV index 5).
Months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in September - Allegany, NY
  • Average cloud cover in September: 47

The month with the most cloud cover is January (Cloud cover 79).
Months with the least cloud cover are July and August (Cloud cover 43).

Average visibility in September - Allegany, NY
  • Average visibility in September: 4mi

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