September weather forecast and climate
Henrietta, NY

The first month of the autumn, September, is still a pleasant month in Henrietta, New York, with average temperature varying between 71.1°F (21.7°C) and 56.1°F (13.4°C).

Temperature

In Henrietta, the average high-temperature slightly decreases, from a moderately hot 76.6°F (24.8°C) in August, to an agreeable 71.1°F (21.7°C). The average low-temperature, in September, is 56.1°F (13.4°C).

Humidity

August and September, with an average relative humidity of 76%, are the least humid months in Henrietta.

Rainfall

September is the month with the least rainfall in Henrietta. Rain falls for 13.9 days and accumulates 1.85" (47mm) of precipitation.

Snowfall

In Henrietta snow does not fall in June through September.

Daylight

The average length of the day in Henrietta, New York, is 12.5h.

Sunshine

In Henrietta, the average sunshine in September is 9.3h.

UV index

In September, the average daily maximum UV index in Henrietta is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for the average person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Henrietta?

The average high-temperature, in September, in Henrietta, New York, is 71.1°F (21.7°C), while the average low-temperature is 56.1°F (13.4°C).

What is the least humid month in Henrietta?

Months with the lowest humidity in Henrietta are August and September, with an average relative humidity of 76%.

What is the average humidity in September in Henrietta?

The average relative humidity in September in Henrietta, New York, is 76%.

How many days does it rain in September in Henrietta?

In Henrietta, during September, the rain falls for 13.9 days and regularly aggregates up to 1.85" (47mm) of precipitation.

What is the driest month in Henrietta?

September is the month with the least rainfall. Rain falls for 13.9 days and accumulates 1.85" (47mm) of precipitation.

Does it snow in Henrietta in September?

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

When it does not snow in Henrietta?

In Henrietta snow does not fall in June through September.

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

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

How long on average sun shines in September in Henrietta?

In September, the average sunshine is 9.3h.

How high is the UV index in September in Henrietta?

In September, the average daily maximum UV index in Henrietta is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.
Average temperature in September - Henrietta, NY
  • Average high temperature in September: 71.1°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in September: 56.1°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in September - Henrietta, NY
  • Average pressure in September: 30.05"

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

Average wind speed in September - Henrietta, NY
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).

Average humidity in September - Henrietta, NY
  • Average humidity in September: 76%

Months with the highest relative humidity are January and February (84%).
Months with the lowest relative humidity are August and September (76%).

Average rainfall in September - Henrietta, NY
  • Average rainfall in September: 1.85"

The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in September - Henrietta, NY
  • Average rainfall days in September: 13.9 days

The month with the highest number of rainy days is August (18.7 days).
The month with the least rainy days is February (7.8 days).

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

The month with the highest snowfall is February (7.01").
Months with the least snowfall are June, July, August and September (0").

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

The month with the highest number of snowfall days is January (17.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - 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: 9.3h

The month with the most sunshine is July (Average sunshine: 10.6h).
Months with the least sunshine are January and February (Average sunshine: 2.7).

Average sunshine days in September - Henrietta, NY
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is September (13.9 days).
The month with the least sunshine days is February (6.7 days).

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

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 - Henrietta, NY
  • Average cloud cover in September: 32

The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 28).

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

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