September weather forecast
Hartsville Junction, TN

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Hartsville Junction, Tennessee, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 80.1°F (26.7°C).

Temperature

Transitioning from August to September involves a subtle drop in average high-temperatures, descending from 85.5°F (29.7°C) to a still warm 80.1°F (26.7°C). Hartsville Junction observes an average low-temperature of 61.3°F (16.3°C) during September.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In September, the rain falls for 14.6 days. Throughout September, 2.56" (65mm) of precipitation is accumulated. In Hartsville Junction, Tennessee, during the entire year, the rain falls for 176.5 days and collects up to 41.22" (1047mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In Hartsville Junction, the average length of the day in September is 12h and 24min.
On the first day of September, sunrise is at 6:17 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:29 pm CDT.

Sunshine

The average sunshine in September is 8.3h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 5 in September leads to these recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

In September, in Hartsville Junction, the average high-temperature is 80.1°F (26.7°C), and the average low-temperature is 61.3°F (16.3°C). The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 96.8°F (36°C).

What is the average humidity in September?

In September, the average relative humidity is 77%.

How much does it rain in September?

In September, the rain falls for 14.6 days. Throughout September, 2.56" (65mm) of precipitation is accumulated.

When it does not snow?

In Hartsville Junction, snow does not fall in May through October.

How many hours of daylight does Hartsville Junction have in September?

In September, the average day length is 12h and 24min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:17 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:29 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September in Hartsville Junction is 8.3h.

How high is the UV index in September?

In Hartsville Junction, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Hartsville Junction, TN

Average temperature in September - Hartsville Junction, TN
  • Average high temperature in September: 80.1°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (42.8°F).

  • Average low temperature in September: 61.3°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 (28.9°F).

Average pressure in September
Hartsville Junction, TN

Average pressure in September - Hartsville Junction, 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 (29.96"Hg).

Average wind speed in September
Hartsville Junction, TN

Average wind speed in September - Hartsville Junction, TN
  • Average wind speed in September: 5.1mph

The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).

Average humidity in September
Hartsville Junction, TN

Average humidity in September - Hartsville Junction, TN
  • Average humidity in September: 77%

The months with the highest relative humidity are February, March, May, July and December (79%).
The month with the lowest relative humidity is October (75%).

Average rainfall in September
Hartsville Junction, TN

Average rainfall in September - Hartsville Junction, TN
  • Average rainfall in September: 2.56"

The wettest month (with the highest rainfall) is July (5.2").
The driest month (with the least rainfall) is November (2.28").

Average rainfall days in September
Hartsville Junction, TN

Average rainfall days in September - Hartsville Junction, TN
  • Average rainfall days in September: 14.6 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (10.3 days).

Average snowfall in September
Hartsville Junction, TN

Average snowfall in September - Hartsville Junction, TN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Hartsville Junction, TN

Average snowfall days in September - Hartsville Junction, TN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Hartsville Junction, TN

Average daylight in September / Average sunshine in September - Hartsville Junction, 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 42min).

  • Average sunshine in September: 8h and 2min

The months with the most sunshine are June and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

Average sunshine days in September
Hartsville Junction, TN

Average sunshine days in September - Hartsville Junction, TN
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (9.8 days).

Average UV index in September
Hartsville Junction, TN

Average UV index in September - Hartsville Junction, 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
Hartsville Junction, TN

Average cloud cover in September - Hartsville Junction, TN
  • Average cloud cover in September: 34

The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 31).

Average visibility in September
Hartsville Junction, TN

Average visibility in September - Hartsville Junction, TN
  • Average visibility in September: 6mi

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

Hartsville Junction, Tennessee, USA

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