September weather forecastDeferiet, NY
September
Weather in September
September, the first month of the autumn in Deferiet, is also an agreeable month, with an average temperature ranging between max 69.1°F (20.6°C) and min 52°F (11.1°C).Temperature
September marks a gentle change in average high-temperature, declining from August's moderately hot 75.6°F (24.2°C) to an agreeable 69.1°F (20.6°C). September witnesses an average nighttime temperature of 52°F (11.1°C).Humidity
The average relative humidity in September is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 13.5 days and accumulates 1.69" (43mm) of precipitation.Snowfall
In Deferiet, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:44 pm EDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In Deferiet, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 3 in September leads to these guidelines:
Ensure safety - Sun damage prevention is strongly urged. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Deferiet, NY
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in September: 52°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in September
Deferiet, NY
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Deferiet, NY
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Deferiet, NY
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Deferiet, NY
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Deferiet, NY
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is October (16.8 days).
The month with the least rainy days is February (6.6 days).
Average snowfall in September
Deferiet, NY
- Average snowfall in September: 0"
The month with the highest snowfall is December (9.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Deferiet, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Deferiet, NY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 2h and 48min).
Average sunshine days in September
Deferiet, NY
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in September
Deferiet, NY
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Deferiet, NY
- Average cloud cover in September: 33
The months with the most cloud cover are January and February (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Deferiet, NY
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
