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 shift from August to September coincides with a small decrease in the average high-temperature, down to a still warm 75.2°F (24°C) from 82.9°F (28.3°C). In the month of September, South Nyack's average low-temperature falls to a refreshing 58.5°F (14.7°C).Humidity
In September, the average relative humidity is 74%.Rainfall
In South Nyack, in September, during 12.5 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. Throughout the year, there are 151.8 rainfall days, and 30.79" (782mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in South Nyack.Daylight
The average length of the day in September in South Nyack, New York, is 12h and 28min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:27 pm. On the last day of September, in South Nyack, sunrise is at 6:52 am and sunset at 6:38 pm EDT.
Sunshine
In South Nyack, New York, the average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index in South Nyack is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 4 in September translates into these instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What is the average September temperature in South Nyack?
What is the average humidity in September in South Nyack?
How much does it rain in South Nyack in September?
When it does not snow in South Nyack?
Does it snow in South Nyack in September?
What is the average length of the day in September in South Nyack?
When is the sunrise / sunset in September in South Nyack?
How many hours of sunshine does South Nyack have in September?
What is the UV index reading in September in South Nyack?
Average temperature in September
South Nyack, NY
- Average high temperature in September: 75.2°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
South Nyack, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
South Nyack, NY
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
South Nyack, NY
- Average humidity in September: 74%
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
South Nyack, NY
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is July (3.35").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in September
South Nyack, NY
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in September
South Nyack, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
South Nyack, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.8 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
South Nyack, NY
- Average daylight in September: 12h and 3min
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 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
South Nyack, NY
- Average sunshine days in September: 14.9 days
The months with the most sunshine days are January and November (20 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in September
South Nyack, NY
- Average UV index in September: 4
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, November and December (UV index 2).
Average cloud cover in September
South Nyack, NY
- Average cloud cover in September: 36
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
South Nyack, 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).
South Nyack, New York, USA
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