September weather forecastNorth Merrick, NY
September
Weather in September
The first month of the autumn, September, is also an agreeable month in North Merrick, New York, with an average temperature varying between 72.5°F (22.5°C) and 64.8°F (18.2°C).Temperature
North Merrick's transition into September involves a gentle shift in temperature, receding from a moderately hot 79°F (26.1°C) in August to a pleasant 72.5°F (22.5°C). September nights in North Merrick register a minor temperature decline, steadying at an enjoyable 64.8°F (18.2°C).Humidity
The average relative humidity in September in North Merrick is 74%.Rainfall
In September, in North Merrick, the rain falls for 13.3 days. Throughout September, 1.81" (46mm) of precipitation is accumulated. Throughout the year, there are 146.9 rainfall days, and 26.38" (670mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In North Merrick, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:22 am and sunset at 7:26 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 in North Merrick is 9.1h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 5 in September leads to these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
North Merrick, NY
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in September: 64.8°F
The months with the highest average low temperature are July and August (71.4°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).
Average pressure in September
North Merrick, NY
- Average pressure in September: 30.05"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
North Merrick, 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 (8.5mph).
Average humidity in September
North Merrick, 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
North Merrick, NY
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is July (3.11").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in September
North Merrick, NY
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in September
North Merrick, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.65").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
North Merrick, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.5 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
North Merrick, 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 48min).
Average sunshine days in September
North Merrick, NY
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
North Merrick, 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
North Merrick, 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
North Merrick, 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).
