Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The arrival of September signals a subtle shift in temperature, down from a moderately hot 74.5°F (23.6°C) in August to an agreeable 68°F (20°C). An average low-temperature of 50°F (10°C) is expected during September.Humidity
In September, the average relative humidity in Port Leyden is 81%.Rainfall
September is the month with the least rainfall in Port Leyden. Rain falls for 14.1 days and accumulates 1.26" (32mm) of precipitation.Snowfall
In Port Leyden, snow does not fall in June through September.Daylight
In Port Leyden, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:36 pm. On the last day of September, in Port Leyden, sunrise is at 6:58 am and sunset at 6:43 pm EDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In Port Leyden, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Undertake precautions - Guarding against sun damage is counselled. The solar radiation around mid-day is intense; avoid the Sun and stay safe. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Port Leyden?
What is the average humidity in September in Port Leyden?
What is the driest month in Port Leyden?
How many days does it rain in September in Port Leyden?
When it does not snow in Port Leyden?
Does it snow in Port Leyden in September?
How many hours of daylight does Port Leyden have in September?
When is the sunrise / sunset in September in Port Leyden?
How many hours of sunshine does Port Leyden have in September?
What is the UV index reading in September in Port Leyden?
Average temperature in September
Port Leyden, NY
- Average high temperature in September: 68°F
The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in September
Port Leyden, NY
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Port Leyden, NY
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Port Leyden, NY
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (78%).
Average rainfall in September
Port Leyden, NY
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is October (2.64").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in September
Port Leyden, NY
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is August (17.9 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Port Leyden, NY
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Port Leyden, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (21.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Port Leyden, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 2h and 24min).
Average sunshine days in September
Port Leyden, NY
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (6.4 days).
Average UV index in September
Port Leyden, NY
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Port Leyden, NY
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 78).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in September
Port Leyden, NY
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
Port Leyden, New York, USA
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