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
September signifies a minor drop in average high-temperature, transitioning from a warm 75.7°F (24.3°C) in August to a pleasant 68.7°F (20.4°C). During September, the average low-temperature is a frosty 49.8°F (9.9°C).Humidity
In September, the average relative humidity is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 1.85" (47mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Lyon Mountain is 12h and 31min.On the first day of September, sunrise is at 6:18 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:37 pm EDT.
Sunshine
The average sunshine in September in Lyon Mountain is 9.1h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Lyon Mountain?
What is the average humidity in September in Lyon Mountain?
What is the driest month in Lyon Mountain?
How many days does it rain in September in Lyon Mountain?
When it does not snow in Lyon Mountain?
Does it snow in Lyon Mountain in September?
How many hours of daylight does Lyon Mountain have in September?
When are sunrise and sunset in September in Lyon Mountain?
How many hours of sunshine does Lyon Mountain have in September?
What is the UV index reading in September in Lyon Mountain?
Average temperature in September
Lyon Mountain, NY
- Average high temperature in September: 68.7°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in September: 49.8°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in September
Lyon Mountain, NY
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Lyon Mountain, NY
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in September
Lyon Mountain, NY
- Average humidity in September: 79%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Lyon Mountain, NY
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Lyon Mountain, NY
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is June (19.1 days).
The month with the least rainy days is February (8 days).
Average snowfall in September
Lyon Mountain, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (13.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lyon Mountain, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Lyon Mountain, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in September
Lyon Mountain, NY
- Average sunshine days in September: 15 days
The month with the most sunshine days is September (15 days).
The month with the least sunshine days is February (5.1 days).
Average UV index in September
Lyon Mountain, 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 and December (UV index 1).
Average cloud cover in September
Lyon Mountain, NY
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Lyon Mountain, NY
- Average visibility in September: 6mi
The months with the highest visibility are May, July, August and September (6mi).
The months with the lowest visibility are January and February (4mi).
Lyon Mountain, New York, USA
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