September weather forecastHampton Bays, NY
September
Weather in September
September, the first month of the autumn in Hampton Bays, is still a pleasant month, with temperature in the range of an average high of 70.9°F (21.6°C) and an average low of 65.7°F (18.7°C).Temperature
Hampton Bays registers an average high-temperature of an agreeable 70.9°F (21.6°C) with the arrival of September, showing minor deviation from the preceding month. A mild drop to an average of 65.7°F (18.7°C) marks the nights during September.Humidity
In September, the average relative humidity is 76%.Rainfall
September is the month with the least rainfall in Hampton Bays. Rain falls for 11.7 days and accumulates 2.01" (51mm) of precipitation.Snowfall
In Hampton Bays, snow does not fall in April, June through November.Daylight
In September, the average length of the day is 12h and 27min.On the first day of September, sunrise is at 6:17 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:33 pm EDT.
Sunshine
In Hampton Bays, New York, the average sunshine in September is 9h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hampton Bays, NY
- Average high temperature in September: 70.9°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 (39°F).
- Average low temperature in September: 65.7°F
The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).
Average pressure in September
Hampton Bays, NY
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Hampton Bays, NY
- Average wind speed in September: 12.3mph
The windiest month (with the highest average wind speed) is January (15.9mph).
The calmest month (with the lowest average wind speed) is July (10.5mph).
Average humidity in September
Hampton Bays, NY
- Average humidity in September: 76%
The months with the highest relative humidity are May and June (81%).
The month with the lowest relative humidity is November (72%).
Average rainfall in September
Hampton Bays, NY
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Hampton Bays, NY
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in September
Hampton Bays, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.69").
The months with the least snowfall are April, June, July, August, September, October and November (0").
Average snowfall days in September
Hampton Bays, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.2 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
Hampton Bays, 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Hampton Bays, NY
- Average sunshine days in September: 17 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in September
Hampton Bays, 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
Hampton Bays, 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
Hampton Bays, 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).
