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
September brings a slight decrease in the average high-temperature, shifting from a moderately hot 75.7°F (24.3°C) in August to a pleasant 70.2°F (21.2°C). Throughout September, Sterling experiences a low-temperature average of 57.4°F (14.1°C).Humidity
The least humid month in Sterling is September, with an average relative humidity of 76%.Rainfall
March and September are months with the least rain when the rain falls for 14 days and typically aggregates up to 2.32" (59mm) of rain.Snowfall
June through September are months without snowfall.Daylight
In Sterling, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:48 pm EDT.
Sunshine
The average sunshine in September is 9.5h.UV index
In Sterling, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, an average UV index of 3 transforms into the following instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the least humid month?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Sterling, NY
- Average high temperature in September: 70.2°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 (29.5°F).
- Average low temperature in September: 57.4°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Sterling, 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 (29.92"Hg).
Average wind speed in September
Sterling, NY
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in September
Sterling, NY
- Average humidity in September: 76%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is September (76%).
Average rainfall in September
Sterling, NY
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is October (3.82").
The driest months (with the least rainfall) are March and September (2.32").
Average rainfall days in September
Sterling, NY
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is August (18.5 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in September
Sterling, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Sterling, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sterling, NY
- Average daylight in September: 12h and 3min
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 0min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 2h and 42min).
Average sunshine days in September
Sterling, NY
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is September (13.4 days).
The month with the least sunshine days is February (5.5 days).
Average UV index in September
Sterling, 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
Sterling, NY
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in September
Sterling, NY
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Sterling, New York, USA
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