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
The advent of September brings a slight shift in average high-temperature, moving from a hot 87.6°F (30.9°C) in August to a warm 81°F (27.2°C). During the nights in September, an average low-temperature of 61.2°F (16.2°C) is observed in Oak Ridge.Heat index
The average heat index in September is computed to be a tropical 86°F (30°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
In Oak Ridge, the average relative humidity in September is 74%.Rainfall
In Oak Ridge, in September, during 13.5 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. In Oak Ridge, North Carolina, during the entire year, the rain falls for 156 days and collects up to 30.08" (764mm) of precipitation.Snowfall
In Oak Ridge, snow does not fall in April through October.Daylight
In Oak Ridge, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:52 am and sunset at 7:47 pm. On the last day of September, in Oak Ridge, sunrise is at 7:14 am and sunset at 7:04 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during September translates into these guidelines:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Oak Ridge in September?
What is the average humidity in September in Oak Ridge?
How much does it rain in Oak Ridge in September?
When it does not snow in Oak Ridge?
What is the average length of the day in September in Oak Ridge?
When are sunrise and sunset in September in Oak Ridge?
How long on average sun shines in September in Oak Ridge?
How high is the UV index in September in Oak Ridge?
Average temperature in September
Oak Ridge, NC
- Average high temperature in September: 81°F
The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (45.5°F).
- Average low temperature in September: 61.2°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in September
Oak Ridge, NC
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Oak Ridge, NC
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Oak Ridge, NC
- Average humidity in September: 74%
The months with the highest relative humidity are May and December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Oak Ridge, NC
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is October (2.01").
Average rainfall days in September
Oak Ridge, NC
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (9 days).
Average snowfall in September
Oak Ridge, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Oak Ridge, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Oak Ridge, NC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Oak Ridge, NC
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in September
Oak Ridge, NC
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Oak Ridge, NC
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 30).
Average visibility in September
Oak Ridge, NC
- 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).
Oak Ridge, North Carolina, USA
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