September weather forecastNelliston, NY
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Nelliston, New York, with an average temperature ranging between min 50.4°F (10.2°C) and max 70.3°F (21.3°C).Temperature
The arrival of September suggests a slight decrease in the average high-temperature, moving from a moderately hot 77°F (25°C) in August to an agreeable 70.3°F (21.3°C). An average nighttime temperature of 50.4°F (10.2°C) is noted during the month of September.Humidity
In September, the average relative humidity in Nelliston is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 11.4 days and accumulates 2.01" (51mm) of precipitation.Snowfall
In Nelliston, snow does not fall in June through September.Daylight
The average length of the day in September in Nelliston is 12h and 29min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:32 pm. On the last day of September, in Nelliston, sunrise is at 6:55 am and sunset at 6:40 pm EDT.
Sunshine
The average sunshine in September is 9h.UV index
In September, the average daily maximum UV index in Nelliston is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 3 during September leads to these advisories:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Nelliston, NY
- Average high temperature in September: 70.3°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 (27.1°F).
- Average low temperature in September: 50.4°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in September
Nelliston, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Nelliston, NY
- Average wind speed in September: 5.9mph
The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Nelliston, NY
- Average humidity in September: 79%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Nelliston, NY
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Nelliston, NY
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Nelliston, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Nelliston, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Nelliston, NY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in September
Nelliston, NY
- Average sunshine days in September: 16 days
The month with the most sunshine days is September (16 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in September
Nelliston, NY
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Nelliston, NY
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Nelliston, NY
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
