September weather forecast
Hornell, NY

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Weather in September

September, the first month of the autumn in Hornell, is also an agreeable month, with an average temperature varying between 69.6°F (20.9°C) and 49.6°F (9.8°C).

Temperature

September brings a minor shift in the average high-temperature, adjusting from a warm 76.5°F (24.7°C) in August to an agreeable 69.6°F (20.9°C). In September, Hornell experiences an average nighttime temperature of 49.6°F (9.8°C).

Humidity

In Hornell, the average relative humidity in September is 81%.

Rainfall

In Hornell, in September, it is raining for 12.9 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, there are 153.6 rainfall days, and 22.48" (571mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Hornell.

Daylight

In September, the average length of the day in Hornell is 12h and 28min.
On the first day of September, sunrise is at 6:36 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:53 pm EDT.

Sunshine

In Hornell, the average sunshine in September is 8.4h.

UV index

In Hornell, 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 radiation for average individuals.
Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature in Hornell?

The high-temperature, in September, in Hornell, is 69.6°F (20.9°C), while the low-temperature averages to 49.6°F (9.8°C).

What is the average humidity in September in Hornell?

In September, the average relative humidity is 81%.

How much does it rain in Hornell in September?

In Hornell, New York, in September, it is raining for 12.9 days, with typically 1.5" (38mm) of accumulated precipitation.

When it does not snow in Hornell?

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

Does it snow in Hornell in September?

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

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

The average day length in September in Hornell is 12h and 28min.

When are sunrise and sunset in September in Hornell?

On the first day of September in Hornell, New York, sunrise is at 6:36 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:53 pm EDT.

How many hours of sunshine does Hornell have in September?

In Hornell, the average sunshine duration in September is 8.4h.

What is the UV index intensity in September in Hornell?

In Hornell, New York, the average daily maximum UV index in September is 3. A UV Index estimate 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
Hornell, NY

Average temperature in September - Hornell, 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: 49.6°F

The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (16°F).

Average pressure in September
Hornell, NY

Average pressure in September - Hornell, NY
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Hornell, NY

Average wind speed in September - Hornell, NY
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

Average humidity in September
Hornell, NY

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

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is May (78%).

Average rainfall in September
Hornell, NY

Average rainfall in September - Hornell, NY
  • Average rainfall in September: 1.5"

The wettest month (with the highest rainfall) is October (2.52").
The driest month (with the least rainfall) is January (1.26").

Average rainfall days in September
Hornell, NY

Average rainfall days in September - Hornell, NY
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (6.3 days).

Average snowfall in September
Hornell, NY

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

The month with the highest snowfall is February (6.54").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Hornell, NY

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

The month with the highest number of snowfall days is January (16.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Hornell, NY
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 2h and 48min).

Average sunshine days in September
Hornell, NY

Average sunshine days in September - Hornell, NY
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is September (14.9 days).
The month with the least sunshine days is February (9 days).

Average UV index in September
Hornell, NY

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

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

Average cloud cover in September
Hornell, NY

Average cloud cover in September - Hornell, NY
  • Average cloud cover in September: 43

The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 39).

Average visibility in September
Hornell, NY

Average visibility in September - Hornell, NY
  • Average visibility in September: 5mi

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

Hornell, New York, USA

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