September weather forecastNapeague, NY
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Napeague, New York, with temperature in the range of an average high of 70.3°F (21.3°C) and an average low of 65.1°F (18.4°C).Temperature
Napeague's weather in September, with an average high-temperature of an agreeable 70.3°F (21.3°C), subtly shifts from August's 75.4°F (24.1°C). During the nights of September, the average low-temperature holds at a refreshing 65.1°F (18.4°C).Humidity
In September, the average relative humidity is 76%.Rainfall
September is the month with the least rainfall. Rain falls for 12.6 days and accumulates 2.09" (53mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:15 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:31 pm EDT.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 5 suggests this advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Napeague, NY
- Average high temperature in September: 70.3°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 65.1°F
The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).
Average pressure in September
Napeague, 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 (29.93"Hg).
Average wind speed in September
Napeague, NY
- Average wind speed in September: 12.7mph
The windiest month (with the highest average wind speed) is January (16.4mph).
The calmest month (with the lowest average wind speed) is July (10.8mph).
Average humidity in September
Napeague, NY
- Average humidity in September: 76%
The months with the highest relative humidity are May and June (82%).
The month with the lowest relative humidity is November (72%).
Average rainfall in September
Napeague, NY
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in September
Napeague, NY
- Average rainfall days in September: 12.6 days
The months with the highest number of rainy days are July and August (15.5 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in September
Napeague, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.97").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Napeague, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Napeague, NY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in September
Napeague, NY
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is November (18.4 days).
The months with the least sunshine days are July and August (13.3 days).
Average UV index in September
Napeague, NY
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in September
Napeague, NY
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Napeague, NY
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
