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 average high-temperature shows a slight dip in September, from August's moderately hot 78.4°F (25.8°C) to a pleasant 72.3°F (22.4°C). Wyandanch marks an average drop to a comfortable 65.5°F (18.6°C) during nighttime in September, following the high of the day.Humidity
The average relative humidity in September in Wyandanch is 74%.Rainfall
In Wyandanch, New York, in September, during 13.8 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, there are 157 rainfall days, and 35.98" (914mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Wyandanch.Daylight
In September, the average length of the day in Wyandanch is 12h and 27min.On the first day of September, sunrise is at 6:21 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:36 pm EDT.
Sunshine
In Wyandanch, New York, the average sunshine in September is 9.1h.UV index
In Wyandanch, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What is the average September temperature in Wyandanch?
What is the average humidity in September in Wyandanch?
How much does it rain in Wyandanch in September?
When it does not snow in Wyandanch?
Does it snow in Wyandanch in September?
How many hours of daylight does Wyandanch have in September?
When is the sunrise / sunset in September in Wyandanch?
How many hours of sunshine does Wyandanch have in September?
What is the UV index reading in September in Wyandanch?
Average temperature in September
Wyandanch, NY
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in September: 65.5°F
The months with the highest average low temperature are July and August (72°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in September
Wyandanch, 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
Wyandanch, NY
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is January (13.6mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).
Average humidity in September
Wyandanch, NY
- Average humidity in September: 74%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is November (71%).
Average rainfall in September
Wyandanch, NY
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is July (3.98").
The driest month (with the least rainfall) is January (2.2").
Average rainfall days in September
Wyandanch, NY
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Wyandanch, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Wyandanch, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Wyandanch, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Wyandanch, NY
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in September
Wyandanch, 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
Wyandanch, NY
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Wyandanch, 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).
Wyandanch, New York, USA
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