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
In Old Bethpage, entering September brings a subtle temperature decrement, reducing from August's warm 78.6°F (25.9°C) to a pleasant 72.5°F (22.5°C). With a barely noticeable fluctuation in temperature, Old Bethpage reaches an average low of 65.5°F (18.6°C) during the September nights.Humidity
In Old Bethpage, the average relative humidity in September is 74%.Rainfall
In September, the rain falls for 12 days. Throughout September, 0.79" (20mm) of precipitation is accumulated. Throughout the year, in Old Bethpage, there are 128.1 rainfall days, and 12.56" (319mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
In Old Bethpage, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:25 pm. On the last day of September, sunrise is at 6:50 am and sunset at 6:37 pm EDT.
Sunshine
In Old Bethpage, the average sunshine in September is 9.1h.UV index
In Old Bethpage, 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 exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Exercise prevention - Precautions against solar damage are endorsed. When the Sun is at its strongest around midday, find shade and limit exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Old Bethpage in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time 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
Old Bethpage, NY
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in September: 65.5°F
The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in September
Old Bethpage, 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
Old Bethpage, NY
- Average wind speed in September: 10.1mph
The windiest month (with the highest average wind speed) is January (13.3mph).
The calmest month (with the lowest average wind speed) is July (8.7mph).
Average humidity in September
Old Bethpage, NY
- Average humidity in September: 74%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (71%).
Average rainfall in September
Old Bethpage, NY
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is July (1.73").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in September
Old Bethpage, NY
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in September
Old Bethpage, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (0.35").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Old Bethpage, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 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
Old Bethpage, 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 54min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Old Bethpage, NY
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is June (14 days).
Average UV index in September
Old Bethpage, 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
Old Bethpage, NY
- Average cloud cover in September: 32
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
Old Bethpage, 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).
Old Bethpage, New York, USA
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