September weather forecast and climate
West Henrietta, NY

September, the first month of the autumn, in West Henrietta, is also an agreeable month, with average temperature varying between 71.8°F (22.1°C) and 54°F (12.2°C).

Temperature

In September, the average high-temperature slightly decreases, from a moderately hot 77.9°F (25.5°C) in August, to an agreeable 71.8°F (22.1°C). In September, the average low-temperature is 54°F (12.2°C).

Humidity

April, May, July through September, with an average relative humidity of 77%, are the least humid months.

Rainfall

In West Henrietta, in September, it is raining for 15 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, in West Henrietta, there are 168.2 rainfall days, and 26.1" (663mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in West Henrietta is 12.5h.

Sunshine

In September, the average sunshine in West Henrietta is 8.8h.

UV index

In September, the average daily maximum UV index in West Henrietta is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. 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 West Henrietta?

The average high-temperature, in September, is 71.8°F (22.1°C), while the average low-temperature is 54°F (12.2°C).

What are the least humid months in West Henrietta?

Months with the lowest humidity in West Henrietta are April, May, July through September, with an average relative humidity of 77%.

What is the average humidity in September in West Henrietta?

In September, the average relative humidity in West Henrietta, New York, is 77%.

How much does it rain in West Henrietta in September?

In West Henrietta, New York, in September, during 15 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

Does it snow in West Henrietta in September?

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

When it does not snow in West Henrietta?

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

What is the average length of the day in September in West Henrietta?

In September, the average length of the day in West Henrietta, New York, is 12.5h.

How many hours of sunshine does West Henrietta have in September?

The average sunshine in September is 8.8h.

How high is the UV index in September in West Henrietta?

The average daily maximum UV index in September in West Henrietta is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - West Henrietta, NY
  • Average high temperature in September: 22.1°C

The warmest month (with the highest average high temperature) is July (26.3°C).
The month with the lowest average high temperature is January (-1.4°C).

  • Average low temperature in September: 12.2°C

The month with the highest average low temperature is July (16.3°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).

Average pressure in September - West Henrietta, NY
  • Average pressure in September: 1017.5mbar

The month with the highest atmospheric pressure is November (1018.9mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).

Average wind speed in September - West Henrietta, NY
  • Average wind speed in September: 10.9km/h

The windiest months (with the highest average wind speed) are January and February (16.7km/h).
The calmest month (with the lowest average wind speed) is July (10.4km/h).

Average humidity in September - West Henrietta, NY
  • Average humidity in September: 77%

Months with the highest relative humidity are January and February (85%).
Months with the lowest relative humidity are April, May, July, August and September (77%).

Average rainfall in September - West Henrietta, NY
  • Average rainfall in September: 44mm

The wettest month (with the highest rainfall) is May (74mm).
The driest month (with the least rainfall) is January (40mm).

Average rainfall days in September - West Henrietta, NY
  • Average rainfall days in September: 15 days

Months with the highest number of rainy days are July and August (18.3 days).
The month with the least rainy days is February (6.9 days).

Average snowfall in September - West Henrietta, NY
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (163mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September - West Henrietta, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (19.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 8.8h

The month with the most sunshine is July (Average sunshine: 10.3h).
Months with the least sunshine are January and February (Average sunshine: 2.6).

Average sunshine days in September - West Henrietta, NY
  • Average sunshine days in September: 13.2 days

The month with the most sunshine days is September (13.2 days).
The month with the least sunshine days is February (6.4 days).

Average UV index in September - West Henrietta, NY
  • Average UV index in September: 3

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

Average cloud cover in September - West Henrietta, NY
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in September - West Henrietta, NY
  • Average visibility in September: 9km

Months with the highest visibility are April, May, June, July, August, September, October and November (9km).
Months with the lowest visibility are January, February, March and December (8km).