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's onset introduces a mild reduction in the average high-temperature, from a warm 80.8°F (27.1°C) in August to a still moderately hot 73.9°F (23.3°C). Greenwood Lake experiences an average temperature drop to a fresh 55°F (12.8°C) during September nights.Humidity
In Greenwood Lake, New York, the average relative humidity in September is 78%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 1.42" (36mm) of precipitation is accumulated. In Greenwood Lake, during the entire year, the rain falls for 137.6 days and collects up to 23.31" (592mm) of precipitation.Snowfall
In Greenwood Lake, snow does not fall in June through September.Daylight
In Greenwood Lake, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:24 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:40 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: An average UV index of 4 in September transforms into this advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Greenwood Lake in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Greenwood Lake, NY
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in September: 55°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Greenwood Lake, 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
Greenwood Lake, NY
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Greenwood Lake, NY
- Average humidity in September: 78%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Greenwood Lake, NY
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in September
Greenwood Lake, NY
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Greenwood Lake, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Greenwood Lake, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Greenwood Lake, 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 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Greenwood Lake, NY
- Average sunshine days in September: 16.2 days
The months with the most sunshine days are January and November (21 days).
The month with the least sunshine days is June (12 days).
Average UV index in September
Greenwood Lake, 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
Greenwood Lake, NY
- Average cloud cover in September: 39
The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Greenwood Lake, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, July, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, August, September and October (5mi).
Greenwood Lake, New York, USA
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