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's arrival comes with a mild decrease in the average high-temperature, moving subtly from a warm 84°F (28.9°C) in August to a still moderately hot 77.9°F (25.5°C). Nelsonville anticipates a considerable drop in temperature at night in September, with an average low of 56.3°F (13.5°C).Humidity
The months with the lowest humidity are April, June, August, September and November, with an average relative humidity of 76%.Rainfall
September is the month with the least rainfall in Nelsonville, Ohio. Rain falls for 10.9 days and accumulates 1.02" (26mm) of precipitation.Snowfall
In Nelsonville, snow does not fall in June through October.Daylight
The average length of the day in September in Nelsonville is 12h and 26min.On the first day of September, sunrise is at 6:57 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:12 pm EDT.
Sunshine
In September, the average sunshine in Nelsonville is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 during September translates into the following guidance:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Nelsonville in September?
What is the least humid month in Nelsonville?
What is the average humidity in September in Nelsonville?
What is the driest month in Nelsonville?
How many days does it rain in September in Nelsonville?
When it does not snow in Nelsonville?
What is the average length of the day in September in Nelsonville?
When is the sunrise / sunset in September in Nelsonville?
How many hours of sunshine does Nelsonville have in September?
What is the UV index reading in September in Nelsonville?
Average temperature in September
Nelsonville, OH
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in September
Nelsonville, OH
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Nelsonville, OH
- Average wind speed in September: 5.1mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Nelsonville, OH
- Average humidity in September: 76%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are April, June, August, September and November (76%).
Average rainfall in September
Nelsonville, OH
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is September (1.02").
Average rainfall days in September
Nelsonville, OH
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (7.6 days).
Average snowfall in September
Nelsonville, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Nelsonville, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Nelsonville, OH
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Nelsonville, OH
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is May (11 days).
Average UV index in September
Nelsonville, OH
- Average UV index in September: 4
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, November and December (UV index 2).
Average cloud cover in September
Nelsonville, OH
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Nelsonville, OH
- Average visibility in September: 5mi
The months with the highest visibility are March, April, October and November (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and December (5mi).
Nelsonville, Ohio, USA
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