September weather forecast
Clarksburg, TN

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Weather in September

The first month of the autumn, September, is still a warm month in Clarksburg, Tennessee, with an average temperature ranging between max 82.6°F (28.1°C) and min 62.8°F (17.1°C).

Temperature

Transitioning into September, Clarksburg experiences an average high-temperature of a moderately hot 82.6°F (28.1°C), marking a minor shift from the preceding month. An average nighttime temperature of 62.8°F (17.1°C) is observed during September.

Heat index

For September, the heat index is estimated at a hot 87.8°F (31°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in September is 73%.

Rainfall

September is the month with the least rainfall. Rain falls for 7.3 days and accumulates 0.24" (6mm) of precipitation.

Snowfall

In Clarksburg, snow does not fall in April through November.

Daylight

In September, the average length of the day in Clarksburg is 12h and 23min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:20 pm. On the last day of September, sunrise is at 6:48 am and sunset at 6:38 pm CDT.

Sunshine

The average sunshine in September in Clarksburg is 9h.

UV index

In September, the average daily maximum UV index in Clarksburg is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

The high-temperature during September is 82.6°F (28.1°C) and the low-temperature is 62.8°F (17.1°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 87.8°F (31°C).

What is the average humidity in September?

In September, the average relative humidity is 73%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 7.3 days and typically collects 0.24" (6mm) of precipitation.

How much does it rain in September?

In Clarksburg, in September, it is raining for 7.3 days, with typically 0.24" (6mm) of accumulated precipitation.

When it does not snow?

In Clarksburg, Tennessee, snow does not fall in April through November.

How many hours of daylight does Clarksburg have in September?

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

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:26 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:38 pm CDT.

How many hours of sunshine does Clarksburg have in September?

In September, the average sunshine duration is 9h.

What is the UV index reading in September?

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
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
Clarksburg, TN

Average temperature in September - Clarksburg, TN
  • Average high temperature in September: 82.6°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (44.6°F).

  • Average low temperature in September: 62.8°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).

Average pressure in September
Clarksburg, TN

Average pressure in September - Clarksburg, TN
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in September
Clarksburg, TN

Average wind speed in September - Clarksburg, TN
  • Average wind speed in September: 5.8mph

The windiest months (with the highest average wind speed) are January, February and April (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

Average humidity in September
Clarksburg, TN

Average humidity in September - Clarksburg, TN
  • Average humidity in September: 73%

The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Clarksburg, TN

Average rainfall in September - Clarksburg, TN
  • Average rainfall in September: 0.24"

The wettest month (with the highest rainfall) is February (0.94").
The driest month (with the least rainfall) is September (0.24").

Average rainfall days in September
Clarksburg, TN

Average rainfall days in September - Clarksburg, TN
  • Average rainfall days in September: 7.3 days

The month with the highest number of rainy days is July (11.4 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in September
Clarksburg, TN

Average snowfall in September - Clarksburg, TN
  • Average snowfall in September: 0"

The months with the highest snowfall are February and March (0.12").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Clarksburg, TN

Average snowfall days in September - Clarksburg, TN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1.6 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
Clarksburg, TN

Average daylight in September / Average sunshine in September - Clarksburg, TN
  • 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 48min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in September
Clarksburg, TN

Average sunshine days in September - Clarksburg, TN
  • Average sunshine days in September: 20.9 days

The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is July (16.6 days).

Average UV index in September
Clarksburg, TN

Average UV index in September - Clarksburg, TN
  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are February and December (UV index 2).

Average cloud cover in September
Clarksburg, TN

Average cloud cover in September - Clarksburg, TN
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in September
Clarksburg, TN

Average visibility in September - Clarksburg, TN
  • Average visibility in September: 6mi

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

Clarksburg, Tennessee, USA

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