September weather forecast
Northern Hills, TN

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Northern Hills, Tennessee, with an average temperature ranging between min 60.6°F (15.9°C) and max 81.5°F (27.5°C).

Temperature

The arrival of September corresponds with a light shift in temperature, down from a hot 87.4°F (30.8°C) in August to a moderately hot 81.5°F (27.5°C). During September, the average low-temperature is a mild 60.6°F (15.9°C).

Heat index

For most parts of September, the heat index is calculated to be a hot 86°F (30°C). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

The average relative humidity in September is 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 7.5 days and typically collects 0.43" (11mm) of precipitation.

Snowfall

In Northern Hills, snow does not fall in April through November.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 7:14 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:25 pm EDT.

Sunshine

In Northern Hills, Tennessee, the average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 5 suggests this advice:
Undertake protective steps - Recommendations to avoid sunburn are issued. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

During September, Northern Hills experiences an average high-temperature of 81.5°F (27.5°C) and a low-temperature of 60.6°F (15.9°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is calculated to be 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 76%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 7.5 days and accumulates 0.43" (11mm) of precipitation.

How much does it rain in Northern Hills in September?

In Northern Hills, in September, it is raining for 7.5 days, with typically 0.43" (11mm) of accumulated precipitation.

When it does not snow?

April through November are months without snowfall.

How many hours of daylight does Northern Hills have in September?

The average day length in September is 12h and 23min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 7:14 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:25 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.5h.

How high is the UV index in September?

In Northern Hills, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Northern Hills, TN

Average temperature in September - Northern Hills, TN
  • Average high temperature in September: 81.5°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (46°F).

  • Average low temperature in September: 60.6°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).

Average pressure in September
Northern Hills, TN

Average pressure in September - Northern Hills, TN
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in September
Northern Hills, TN

Average wind speed in September - Northern Hills, TN
  • Average wind speed in September: 4.1mph

The windiest month (with the highest average wind speed) is February (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

Average humidity in September
Northern Hills, TN

Average humidity in September - Northern Hills, TN
  • Average humidity in September: 76%

The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, October and November (75%).

Average rainfall in September
Northern Hills, TN

Average rainfall in September - Northern Hills, TN
  • Average rainfall in September: 0.43"

The wettest months (with the highest rainfall) are February and December (1.18").
The driest month (with the least rainfall) is September (0.43").

Average rainfall days in September
Northern Hills, TN

Average rainfall days in September - Northern Hills, TN
  • Average rainfall days in September: 7.5 days

The month with the highest number of rainy days is July (11.7 days).
The month with the least rainy days is October (6.1 days).

Average snowfall in September
Northern Hills, TN

Average snowfall in September - Northern Hills, TN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Northern Hills, TN

Average snowfall days in September - Northern Hills, TN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.3 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
Northern Hills, TN

Average daylight in September / Average sunshine in September - Northern Hills, TN
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in September
Northern Hills, TN

Average sunshine days in September - Northern Hills, TN
  • Average sunshine days in September: 20.5 days

The month with the most sunshine days is October (23.6 days).
The month with the least sunshine days is July (16.8 days).

Average UV index in September
Northern Hills, TN

Average UV index in September - Northern Hills, TN
  • 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
Northern Hills, TN

Average cloud cover in September - Northern Hills, TN
  • Average cloud cover in September: 32

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in September
Northern Hills, TN

Average visibility in September - Northern Hills, TN
  • Average visibility in September: 5mi

The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).

Northern Hills, Tennessee, USA

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