September weather forecast
Jackson, TN

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Weather in September

September welcomes the autumn season in Jackson, Tennessee, featuring a gradually cooling temperature with highs resting at 82.9°F (28.3°C). Signifying a transition, rainfall significantly drops to 0.67" (17mm), the lowest observed value in the year. Wind speed at 5.9mph (9.5km/h) escorts September, ensuring that the plummeting temperatures and rainfall stay in sync. The city begins to have a taste of shorter days as sunshine hours go down. Meanwhile, the drop in temperature impacts the UV index, substantially reducing the potential risk of sunburn.

Temperature

September's advent denotes a minor fluctuation in the average high-temperature to a warm 82.9°F (28.3°C) from August's 87.4°F (30.8°C). Jackson records an average nighttime low of 63.5°F (17.5°C) in September.

Heat index

The heat index for September is computed to be a tropical 89.6°F (32°C). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.

Humidity

In Jackson, the average relative humidity in September is 73%.

Rainfall

September is the month with the least rainfall in Jackson. Rain falls for 8.9 days and accumulates 0.67" (17mm) of precipitation.

Snowfall

April through October are months without snowfall in Jackson.

Daylight

In Jackson, the average length of the day in September is 12h and 23min.
On the first day of September in Jackson, sunrise is at 6:27 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:40 pm CDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum UV index of 5 in September translates into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Stay sun-safe with clothing that is both closely woven and worn loosely.
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Frequently asked questions

Is it hot in Jackson during September?

In September, the average high-temperature and low-temperature in Jackson, Tennessee, are 82.9°F (28.3°C) and 63.5°F (17.5°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is computed to be 89.6°F (32°C).

What is the average humidity in September in Jackson?

In Jackson, Tennessee, the average relative humidity in September is 73%.

What is the driest month in Jackson?

The month with the least rainfall is September, when the rain falls for 8.9 days and typically collects 0.67" (17mm) of precipitation.

How many days does it rain in September in Jackson?

In Jackson, in September, it is raining for 8.9 days, with typically 0.67" (17mm) of accumulated precipitation.

When it does not snow in Jackson?

April through October are months without snowfall.

What is the average length of the day in September in Jackson?

In September, the average day length in Jackson is 12h and 23min.

When are sunrise and sunset in September in Jackson?

On the first day of September in Jackson, sunrise is at 6:27 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:40 pm CDT.

How long on average sun shines in September in Jackson?

In September, the average sunshine duration in Jackson, Tennessee, is 9.4h.

How high is the UV index in September in Jackson?

In Jackson, Tennessee, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to 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
Jackson, TN

Average temperature in September - Jackson, TN
  • Average high temperature in September: 82.9°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 (45.7°F).

  • Average low temperature in September: 63.5°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (32°F).

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Average pressure in September
Jackson, TN

Average pressure in September - Jackson, TN
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in September
Jackson, TN

Average wind speed in September - Jackson, TN
  • Average wind speed in September: 5.9mph

The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).

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Average humidity in September
Jackson, TN

Average humidity in September - Jackson, 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 (71%).

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Average rainfall in September
Jackson, TN

Average rainfall in September - Jackson, TN
  • Average rainfall in September: 0.67"

The wettest month (with the highest rainfall) is July (1.85").
The driest month (with the least rainfall) is September (0.67").

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Average rainfall days in September
Jackson, TN

Average rainfall days in September - Jackson, TN
  • Average rainfall days in September: 8.9 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (7.1 days).

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Average snowfall in September
Jackson, TN

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

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

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Average snowfall days in September
Jackson, TN

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

The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Jackson, TN

Average daylight in September / Average sunshine in September - Jackson, 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: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in September
Jackson, TN

Average sunshine days in September - Jackson, TN
  • Average sunshine days in September: 18.8 days

The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (13.8 days).

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Average UV index in September
Jackson, TN

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

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

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Average cloud cover in September
Jackson, TN

Average cloud cover in September - Jackson, TN
  • Average cloud cover in September: 28

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).

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Average visibility in September
Jackson, TN

Average visibility in September - Jackson, TN
  • 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).

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Jackson, Tennessee, USA

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