September weather forecast
East Williamson, NY

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Weather in September

The first month of the autumn, September, is still a pleasant month in East Williamson, New York, with temperature in the range of an average high of 70.2°F (21.2°C) and an average low of 57.9°F (14.4°C).

Temperature

As August makes way for September, East Williamson's average high-temperature eases from a warm 75.9°F (24.4°C) to a pleasant 70.2°F (21.2°C). During the month of September, an average low-temperature of 57.9°F (14.4°C) is recorded.

Humidity

With an average relative humidity of 76%, September is the least humid month.

Rainfall

In East Williamson, in September, during 15.3 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In East Williamson, during the entire year, the rain falls for 171.8 days and collects up to 32.76" (832mm) of precipitation.

Snowfall

In East Williamson, snow does not fall in June through September.

Daylight

In September, the average length of the day is 12h and 29min.
On the first day of September, sunrise is at 6:33 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:51 pm EDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

In East Williamson, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum UV index of 3 in September translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The solar radiation around mid-day is intense; avoid the Sun and stay safe. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Jun 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

During September, East Williamson experiences an average high-temperature of 70.2°F (21.2°C) and a low-temperature of 57.9°F (14.4°C).

What is the least humid month in East Williamson?

September is the least humid month, with an average relative humidity of 76%.

What is the average humidity in September in East Williamson?

In East Williamson, the average relative humidity in September is 76%.

How many days does it rain in September?

In September, the rain falls for 15.3 days. Throughout September, 2.32" (59mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

How many hours of daylight does East Williamson have in September?

The average day length in September is 12h and 29min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:33 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:51 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.4h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes 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
East Williamson, NY

Average temperature in September - East Williamson, NY
  • Average high temperature in September: 70.2°F

The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in September: 57.9°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 (21°F).

Average pressure in September
East Williamson, NY

Average pressure in September - East Williamson, NY
  • Average pressure in September: 30.05"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
East Williamson, NY

Average wind speed in September - East Williamson, NY
  • Average wind speed in September: 8.8mph

The windiest month (with the highest average wind speed) is January (13.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

Average humidity in September
East Williamson, NY

Average humidity in September - East Williamson, NY
  • Average humidity in September: 76%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (76%).

Average rainfall in September
East Williamson, NY

Average rainfall in September - East Williamson, NY
  • Average rainfall in September: 2.32"

The wettest month (with the highest rainfall) is October (3.62").
The driest month (with the least rainfall) is January (2.05").

Average rainfall days in September
East Williamson, NY

Average rainfall days in September - East Williamson, NY
  • Average rainfall days in September: 15.3 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (7.9 days).

Average snowfall in September
East Williamson, NY

Average snowfall in September - East Williamson, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is February (6.26").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
East Williamson, NY

Average snowfall days in September - East Williamson, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
East Williamson, NY

Average daylight in September / Average sunshine in September - East Williamson, 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 48min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).

Average sunshine days in September
East Williamson, NY

Average sunshine days in September - East Williamson, NY
  • Average sunshine days in September: 12.4 days

The month with the most sunshine days is May (12.7 days).
The month with the least sunshine days is February (6.3 days).

Average UV index in September
East Williamson, NY

Average UV index in September - East Williamson, 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 and December (UV index 1).

Average cloud cover in September
East Williamson, NY

Average cloud cover in September - East Williamson, NY
  • Average cloud cover in September: 32

The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in September
East Williamson, NY

Average visibility in September - East Williamson, NY
  • Average visibility in September: 6mi

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

East Williamson, New York, USA

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