September weather forecastBethpage, NY
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Bethpage, New York, with an average temperature varying between 72.5°F (22.5°C) and 64.9°F (18.3°C).Temperature
September ushers in a minute temperature change, with average high-temperatures reducing from August's warm 78.8°F (26°C) to an agreeable 72.5°F (22.5°C). September nights in Bethpage cool to an average low-temperature of 64.9°F (18.3°C), a marginal decrease from its daytime equivalent.Humidity
In Bethpage, the average relative humidity in September is 74%.Rainfall
In September, in Bethpage, New York, the rain falls for 12.9 days. Throughout September, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 157 rainfall days, and 31.54" (801mm) of precipitation is accumulated.Snowfall
In Bethpage, snow does not fall in May through September.Daylight
The average length of the day in September in Bethpage 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 6:50 am and sunset at 6:37 pm EDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 5 during September leads to these advisories:
Ensure safety - Recommendations to avert sunburn are presented. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bethpage, NY
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is August (71.6°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).
Average pressure in September
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
Bethpage, NY
- Average wind speed in September: 9.8mph
The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is July (8.6mph).
Average humidity in September
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
Bethpage, NY
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is July (3.46").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in September
Bethpage, NY
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (9 days).
Average snowfall in September
Bethpage, NY
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.3").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Bethpage, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.5 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
Bethpage, NY
- Average daylight in September: 12h and 30min
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 6min
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 42min).
Average sunshine days in September
Bethpage, NY
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
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
Bethpage, NY
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
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).
